Bump version for 2.6.0

Add a singular role

.github/workflows/ci.yml

@@ -4,6 +4,7 @@ on:
     branches:
       - main
   pull_request:
+  workflow_dispatch:
 jobs:
   rubocop:
     name: RuboCop
@@ -22,22 +23,29 @@ jobs:
         run: bundle exec rubocop --parallel
   tests:
     strategy:
+      fail-fast: false
       matrix:
         ruby-version:
           - "3.1"
           - "3.2"
           - "3.3"
+          - "3.4"
         gemfile:
           - Gemfile
           - gemfiles/rails_edge.gemfile
+        exclude:
+          - ruby-version: "3.1"
+            gemfile: gemfiles/rails_edge.gemfile
     name: ${{ format('Tests (Ruby {0})', matrix.ruby-version) }}
     runs-on: ubuntu-latest
-    continue-on-error: true
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
     steps:
       - uses: actions/checkout@v4
 
+      - name: Remove gemfile.lock
+        run: rm Gemfile.lock
+
       - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -46,3 +54,5 @@ jobs:
 
       - name: Run tests
         run: bin/test
+        env:
+          RUBYOPT: ${{ startsWith(matrix.ruby-version, '3.4.') && '--enable=frozen-string-literal' || '' }}

Dockerfile

@@ -1,5 +1,4 @@
-# Use the official Ruby 3.2.0 Alpine image as the base image
-FROM ruby:3.2.0-alpine
+FROM ruby:3.4-alpine
 
 # Install docker/buildx-bin
 COPY --from=docker/buildx-bin /buildx /usr/libexec/docker/cli-plugins/docker-buildx
@@ -14,9 +13,9 @@ COPY Gemfile Gemfile.lock kamal.gemspec ./
 COPY lib/kamal/version.rb /kamal/lib/kamal/version.rb
 
 # Install system dependencies
-RUN apk add --no-cache build-base git docker openrc openssh-client-default \
+RUN apk add --no-cache build-base git docker openrc openssh-client-default yaml-dev \
     && rc-update add docker boot \
-    && gem install bundler --version=2.4.3 \
+    && gem install bundler --version=2.6.5 \
     && bundle install
 
 # Copy the rest of our application code into the container.
@@ -33,7 +32,7 @@ WORKDIR /workdir
 
 # Tell git it's safe to access /workdir/.git even if
 # the directory is owned by a different user
-RUN git config --global --add safe.directory /workdir
+RUN git config --global --add safe.directory '*'
 
 # Set the entrypoint to run the installed binary in /workdir
 # Example:  docker run -it -v "$PWD:/workdir" kamal init

Gemfile.lock

@@ -1,152 +1,157 @@
 PATH
   remote: .
   specs:
-    kamal (2.0.0)
+    kamal (2.6.0)
       activesupport (>= 7.0)
       base64 (~> 0.2)
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
       dotenv (~> 3.1)
-      ed25519 (~> 1.2)
-      net-ssh (~> 7.0)
+      ed25519 (~> 1.4)
+      net-ssh (~> 7.3)
       sshkit (>= 1.23.0, < 2.0)
       thor (~> 1.3)
-      zeitwerk (~> 2.5)
+      zeitwerk (>= 2.6.18, < 3.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (7.1.3.4)
-      actionview (= 7.1.3.4)
-      activesupport (= 7.1.3.4)
+    actionpack (8.0.0.1)
+      actionview (= 8.0.0.1)
+      activesupport (= 8.0.0.1)
       nokogiri (>= 1.8.5)
-      racc
       rack (>= 2.2.4)
       rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    actionview (7.1.3.4)
-      activesupport (= 7.1.3.4)
+      useragent (~> 0.16)
+    actionview (8.0.0.1)
+      activesupport (= 8.0.0.1)
       builder (~> 3.1)
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activesupport (7.1.3.4)
+    activesupport (8.0.0.1)
       base64
+      benchmark (>= 0.3)
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+      concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
       minitest (>= 5.1)
-      mutex_m
-      tzinfo (~> 2.0)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
     ast (2.4.2)
     base64 (0.2.0)
     bcrypt_pbkdf (1.1.1)
-    bcrypt_pbkdf (1.1.1-arm64-darwin)
-    bcrypt_pbkdf (1.1.1-x86_64-darwin)
+    benchmark (0.4.0)
     bigdecimal (3.1.8)
     builder (3.3.0)
-    concurrent-ruby (1.3.3)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crass (1.0.6)
+    date (3.4.1)
     debug (1.9.2)
       irb (~> 1.10)
       reline (>= 0.3.8)
-    dotenv (3.1.2)
+    dotenv (3.1.5)
     drb (2.2.1)
-    ed25519 (1.3.0)
+    ed25519 (1.4.0)
     erubi (1.13.0)
-    i18n (1.14.5)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    io-console (0.7.2)
-    irb (1.14.0)
+    io-console (0.8.0)
+    irb (1.14.2)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.7.2)
+    json (2.9.0)
     language_server-protocol (3.17.0.3)
-    loofah (2.22.0)
+    logger (1.6.3)
+    loofah (2.23.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    minitest (5.24.1)
-    mocha (2.4.5)
+    minitest (5.25.4)
+    mocha (2.7.1)
       ruby2_keywords (>= 0.0.5)
-    mutex_m (0.2.0)
     net-scp (4.0.0)
       net-ssh (>= 2.6.5, < 8.0.0)
     net-sftp (4.0.0)
       net-ssh (>= 5.0.0, < 8.0.0)
-    net-ssh (7.2.3)
-    nokogiri (1.16.7-arm64-darwin)
+    net-ssh (7.3.0)
+    nokogiri (1.18.8-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.16.7-x86_64-darwin)
+    nokogiri (1.18.8-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.7-x86_64-linux)
+    nokogiri (1.18.8-x86_64-darwin)
       racc (~> 1.4)
-    parallel (1.25.1)
-    parser (3.3.4.0)
+    nokogiri (1.18.8-x86_64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.18.8-x86_64-linux-musl)
+      racc (~> 1.4)
+    ostruct (0.6.1)
+    parallel (1.26.3)
+    parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
-    psych (5.1.2)
+    psych (5.2.1)
+      date
       stringio
     racc (1.8.1)
-    rack (3.1.7)
+    rack (3.1.12)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
-    rackup (2.1.0)
+    rackup (2.2.1)
       rack (>= 3)
-      webrick (~> 1.8)
     rails-dom-testing (2.2.0)
       activesupport (>= 5.0.0)
       minitest
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.6.0)
+    rails-html-sanitizer (1.6.2)
       loofah (~> 2.21)
-      nokogiri (~> 1.14)
-    railties (7.1.3.4)
-      actionpack (= 7.1.3.4)
-      activesupport (= 7.1.3.4)
-      irb
+      nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
+    railties (8.0.0.1)
+      actionpack (= 8.0.0.1)
+      activesupport (= 8.0.0.1)
+      irb (~> 1.13)
       rackup (>= 1.0.0)
       rake (>= 12.2)
       thor (~> 1.0, >= 1.2.2)
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
     rake (13.2.1)
-    rdoc (6.7.0)
+    rdoc (6.8.1)
       psych (>= 4.0.0)
-    regexp_parser (2.9.2)
-    reline (0.5.9)
+    regexp_parser (2.9.3)
+    reline (0.5.12)
       io-console (~> 0.5)
-    rexml (3.3.4)
-      strscan
-    rubocop (1.65.1)
+    rubocop (1.69.2)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.36.2, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.32.0)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.36.2)
       parser (>= 3.3.1.0)
-    rubocop-minitest (0.35.1)
+    rubocop-minitest (0.36.0)
       rubocop (>= 1.61, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-performance (1.21.1)
+    rubocop-performance (1.23.0)
       rubocop (>= 1.48.1, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-rails (2.25.1)
+    rubocop-rails (2.27.0)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
-      rubocop (>= 1.33.0, < 2.0)
+      rubocop (>= 1.52.0, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rails-omakase (1.0.0)
       rubocop
@@ -155,24 +160,30 @@ GEM
       rubocop-rails
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sshkit (1.23.0)
+    securerandom (0.4.0)
+    sshkit (1.23.2)
       base64
       net-scp (>= 1.1.2)
       net-sftp (>= 2.1.2)
       net-ssh (>= 2.8.0)
-    stringio (3.1.1)
-    strscan (3.1.0)
-    thor (1.3.1)
+      ostruct
+    stringio (3.1.2)
+    thor (1.3.2)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unicode-display_width (2.5.0)
-    webrick (1.8.1)
-    zeitwerk (2.6.17)
+    unicode-display_width (3.1.2)
+      unicode-emoji (~> 4.0, >= 4.0.4)
+    unicode-emoji (4.0.4)
+    uri (1.0.3)
+    useragent (0.16.11)
+    zeitwerk (2.7.1)
 
 PLATFORMS
+  aarch64-linux-musl
   arm64-darwin
   x86_64-darwin
   x86_64-linux
+  x86_64-linux-musl
 
 DEPENDENCIES
   debug
@@ -182,4 +193,4 @@ DEPENDENCIES
   rubocop-rails-omakase
 
 BUNDLED WITH
-   2.4.3
+   2.6.5

bin/docs

@@ -30,6 +30,7 @@ DOCS = {
   "ssh" => "SSH",
   "sshkit" => "SSHKit"
 }
+DOCS_PATH = "lib/kamal/configuration/docs"
 
 class DocWriter
   attr_reader :from_file, :to_file, :key, :heading, :body, :output, :in_yaml
@@ -70,6 +71,7 @@ class DocWriter
             generate_line(line, heading: place == :new_section)
             place = :in_section
           else
+            output.puts
             output.puts "```yaml"
             output.puts line
             place = :in_yaml
@@ -77,6 +79,7 @@ class DocWriter
         when :in_yaml, :in_empty_line_yaml
           if line =~ /^ *#/
             output.puts "```"
+            output.puts
             generate_line(line, heading: place == :in_empty_line_yaml)
             place = :in_section
           elsif line.empty?
@@ -92,11 +95,12 @@ class DocWriter
 
     def generate_header
       output.puts "---"
+      output.puts "# This file has been generated from the Kamal source, do not edit directly."
+      output.puts "# Find the source of this file at #{DOCS_PATH}/#{key}.yml in the Kamal repository."
       output.puts "title: #{heading[2..-1]}"
       output.puts "---"
       output.puts
       output.puts heading
-      output.puts
     end
 
     def generate_line(line, heading: false)
@@ -118,7 +122,11 @@ class DocWriter
     end
 
     def linkify(text)
-      text.downcase.gsub(" ", "-")
+      if text == "Configuration overview"
+        "overview"
+      else
+        text.downcase.gsub(" ", "-")
+      end
     end
 
     def titlify(text)
@@ -126,10 +134,8 @@ class DocWriter
     end
 end
 
-from_dir = File.join(File.dirname(__FILE__), "../lib/kamal/configuration/docs")
+from_dir = File.join(File.dirname(__FILE__), "../#{DOCS_PATH}")
 to_dir = File.join(kamal_site_repo, "docs/configuration")
 Dir.glob("#{from_dir}/*") do |from_file|
-  key = File.basename(from_file, ".yml")
-
   DocWriter.new(from_file, to_dir).write
 end

kamal.gemspec

@@ -13,11 +13,11 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "activesupport", ">= 7.0"
   spec.add_dependency "sshkit", ">= 1.23.0", "< 2.0"
-  spec.add_dependency "net-ssh", "~> 7.0"
+  spec.add_dependency "net-ssh", "~> 7.3"
   spec.add_dependency "thor", "~> 1.3"
   spec.add_dependency "dotenv", "~> 3.1"
-  spec.add_dependency "zeitwerk", "~> 2.5"
-  spec.add_dependency "ed25519", "~> 1.2"
+  spec.add_dependency "zeitwerk", ">= 2.6.18", "< 3.0"
+  spec.add_dependency "ed25519", "~> 1.4"
   spec.add_dependency "bcrypt_pbkdf", "~> 1.0"
   spec.add_dependency "concurrent-ruby", "~> 1.2"
   spec.add_dependency "base64", "~> 0.2"

lib/kamal/cli.rb

@@ -2,6 +2,7 @@ module Kamal::Cli
   class BootError < StandardError; end
   class HookError < StandardError; end
   class LockError < StandardError; end
+  class DependencyError < StandardError; end
 end
 
 # SSHKit uses instance eval, so we need a global const for ergonomics

lib/kamal/cli/accessory.rb

@@ -1,3 +1,6 @@
+require "active_support/core_ext/array/conversions"
+require "concurrent/array"
+
 class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "boot [NAME]", "Boot new accessory service on host (use NAME=all to boot all accessories)"
   def boot(name, prepare: true)
@@ -8,6 +11,16 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         prepare(name) if prepare
 
         with_accessory(name) do |accessory, hosts|
+          booted_hosts = Concurrent::Array.new
+          on(hosts) do |host|
+            booted_hosts << host.to_s if capture_with_info(*accessory.info(all: true, quiet: true)).strip.presence
+          end
+
+          if booted_hosts.any?
+            say "Skipping booting `#{name}` on #{booted_hosts.sort.join(", ")}, a container already exists", :yellow
+            hosts -= booted_hosts
+          end
+
           directories(name)
           upload(name)
 
@@ -16,6 +29,11 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
             execute *accessory.ensure_env_directory
             upload! accessory.secrets_io, accessory.secrets_path, mode: "0600"
             execute *accessory.run
+
+            if accessory.running_proxy?
+              target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+              execute *accessory.deploy(target: target)
+            end
           end
         end
       end
@@ -73,6 +91,10 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         on(hosts) do
           execute *KAMAL.auditor.record("Started #{name} accessory"), verbosity: :debug
           execute *accessory.start
+          if accessory.running_proxy?
+            target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+            execute *accessory.deploy(target: target)
+          end
         end
       end
     end
@@ -85,6 +107,11 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         on(hosts) do
           execute *KAMAL.auditor.record("Stopped #{name} accessory"), verbosity: :debug
           execute *accessory.stop, raise_on_non_zero_exit: false
+
+          if accessory.running_proxy?
+            target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+            execute *accessory.remove if target
+          end
         end
       end
     end
@@ -110,32 +137,37 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     end
   end
 
-  desc "exec [NAME] [CMD]", "Execute a custom command on servers (use --help to show options)"
+  desc "exec [NAME] [CMD...]", "Execute a custom command on servers within the accessory container (use --help to show options)"
   option :interactive, aliases: "-i", type: :boolean, default: false, desc: "Execute command over ssh for an interactive shell (use for console/bash)"
   option :reuse, type: :boolean, default: false, desc: "Reuse currently running container instead of starting a new one"
-  def exec(name, cmd)
+  def exec(name, *cmd)
+    pre_connect_if_required
+
+    cmd = Kamal::Utils.join_commands(cmd)
     with_accessory(name) do |accessory, hosts|
       case
       when options[:interactive] && options[:reuse]
-        say "Launching interactive command with via SSH from existing container...", :magenta
+        say "Launching interactive command via SSH from existing container...", :magenta
         run_locally { exec accessory.execute_in_existing_container_over_ssh(cmd) }
 
       when options[:interactive]
         say "Launching interactive command via SSH from new container...", :magenta
+        on(accessory.hosts.first) { execute *KAMAL.registry.login }
         run_locally { exec accessory.execute_in_new_container_over_ssh(cmd) }
 
       when options[:reuse]
         say "Launching command from existing container...", :magenta
-        on(hosts) do
+        on(hosts) do |host|
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
-          capture_with_info(*accessory.execute_in_existing_container(cmd))
+          puts_by_host host, capture_with_info(*accessory.execute_in_existing_container(cmd))
         end
 
       else
         say "Launching command from new container...", :magenta
-        on(hosts) do
+        on(hosts) do |host|
+          execute *KAMAL.registry.login
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
-          capture_with_info(*accessory.execute_in_new_container(cmd))
+          puts_by_host host, capture_with_info(*accessory.execute_in_new_container(cmd))
         end
       end
     end
@@ -145,7 +177,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
   option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
   option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
-  option :grep_options, aliases: "-o", desc: "Additional options supplied to grep"
+  option :grep_options, desc: "Additional options supplied to grep"
   option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
   option :skip_timestamps, type: :boolean, aliases: "-T", desc: "Skip appending timestamps to logging output"
   def logs(name)
@@ -258,11 +290,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     end
 
     def accessory_hosts(accessory)
-      if KAMAL.specific_hosts&.any?
-        KAMAL.specific_hosts & accessory.hosts
-      else
-        accessory.hosts
-      end
+      KAMAL.accessory_hosts & accessory.hosts
     end
 
     def remove_accessory(name)
@@ -275,7 +303,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     def prepare(name)
       with_accessory(name) do |accessory, hosts|
         on(hosts) do
-          execute *KAMAL.registry.login
+          execute *KAMAL.registry.login(registry_config: accessory.registry)
           execute *KAMAL.docker.create_network
         rescue SSHKit::Command::Failed => e
           raise unless e.message.include?("already exists")

lib/kamal/cli/alias/command.rb

@@ -1,6 +1,7 @@
 class Kamal::Cli::Alias::Command < Thor::DynamicCommand
   def run(instance, args = [])
     if (_alias = KAMAL.config.aliases[name])
+      KAMAL.reset
       Kamal::Cli::Main.start(Shellwords.split(_alias.command) + ARGV[1..-1])
     else
       super

lib/kamal/cli/app.rb

@@ -7,23 +7,33 @@ class Kamal::Cli::App < Kamal::Cli::Base
         say "Start container with version #{version} (or reboot if already running)...", :magenta
 
         # Assets are prepared in a separate step to ensure they are on all hosts before booting
-        on(KAMAL.hosts) do
+        on(KAMAL.app_hosts) do
+          Kamal::Cli::App::ErrorPages.new(host, self).run
+
           KAMAL.roles_on(host).each do |role|
-            Kamal::Cli::App::PrepareAssets.new(host, role, self).run
+            Kamal::Cli::App::Assets.new(host, role, self).run
           end
         end
 
         # Primary hosts and roles are returned first, so they can open the barrier
         barrier = Kamal::Cli::Healthcheck::Barrier.new
 
-        on(KAMAL.hosts, **KAMAL.boot_strategy) do |host|
-          KAMAL.roles_on(host).each do |role|
-            Kamal::Cli::App::Boot.new(host, role, self, version, barrier).run
+        host_boot_groups.each do |hosts|
+          host_list = Array(hosts).join(",")
+          run_hook "pre-app-boot", hosts: host_list
+
+          on(hosts) do |host|
+            KAMAL.roles_on(host).each do |role|
+              Kamal::Cli::App::Boot.new(host, role, self, version, barrier).run
+            end
           end
+
+          run_hook "post-app-boot", hosts: host_list
+          sleep KAMAL.config.boot.wait if KAMAL.config.boot.wait
         end
 
         # Tag once the app booted on all hosts
-        on(KAMAL.hosts) do |host|
+        on(KAMAL.app_hosts) do |host|
           execute *KAMAL.auditor.record("Tagging #{KAMAL.config.absolute_image} as the latest image"), verbosity: :debug
           execute *KAMAL.app.tag_latest_image
         end
@@ -34,7 +44,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
   desc "start", "Start existing app container on servers"
   def start
     with_lock do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
@@ -57,7 +67,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
   desc "stop", "Stop app container on servers"
   def stop
     with_lock do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
@@ -68,7 +78,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
             version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
             endpoint = capture_with_info(*app.container_id_for_version(version)).strip
             if endpoint.present?
-              execute *app.remove(target: endpoint), raise_on_non_zero_exit: false
+              execute *app.remove, raise_on_non_zero_exit: false
             end
           end
 
@@ -81,7 +91,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
   # FIXME: Drop in favor of just containers?
   desc "details", "Show details about app containers"
   def details
-    on(KAMAL.hosts) do |host|
+    on(KAMAL.app_hosts) do |host|
       roles = KAMAL.roles_on(host)
 
       roles.each do |role|
@@ -94,9 +104,21 @@ class Kamal::Cli::App < Kamal::Cli::Base
   option :interactive, aliases: "-i", type: :boolean, default: false, desc: "Execute command over ssh for an interactive shell (use for console/bash)"
   option :reuse, type: :boolean, default: false, desc: "Reuse currently running container instead of starting a new one"
   option :env, aliases: "-e", type: :hash, desc: "Set environment variables for the command"
+  option :detach, type: :boolean, default: false, desc: "Execute command in a detached container"
   def exec(*cmd)
+    pre_connect_if_required
+
+    if (incompatible_options = [ :interactive, :reuse ].select { |key| options[:detach] && options[key] }.presence)
+      raise ArgumentError, "Detach is not compatible with #{incompatible_options.join(" or ")}"
+    end
+
+    if cmd.empty?
+      raise ArgumentError, "No command provided. You must specify a command to execute."
+    end
+
     cmd = Kamal::Utils.join_commands(cmd)
     env = options[:env]
+    detach = options[:detach]
     case
     when options[:interactive] && options[:reuse]
       say "Get current version of running container...", :magenta unless options[:version]
@@ -109,6 +131,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
       say "Get most recent version available as an image...", :magenta unless options[:version]
       using_version(version_or_latest) do |version|
         say "Launching interactive command with version #{version} via SSH from new container on #{KAMAL.primary_host}...", :magenta
+        on(KAMAL.primary_host) { execute *KAMAL.registry.login }
         run_locally do
           exec KAMAL.app(role: KAMAL.primary_role, host: KAMAL.primary_host).execute_in_new_container_over_ssh(cmd, env: env)
         end
@@ -119,7 +142,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
       using_version(options[:version] || current_running_version) do |version|
         say "Launching command with version #{version} from existing container...", :magenta
 
-        on(KAMAL.hosts) do |host|
+        on(KAMAL.app_hosts) do |host|
           roles = KAMAL.roles_on(host)
 
           roles.each do |role|
@@ -133,12 +156,14 @@ class Kamal::Cli::App < Kamal::Cli::Base
       say "Get most recent version available as an image...", :magenta unless options[:version]
       using_version(version_or_latest) do |version|
         say "Launching command with version #{version} from new container...", :magenta
-        on(KAMAL.hosts) do |host|
+        on(KAMAL.app_hosts) do |host|
+          execute *KAMAL.registry.login
+
           roles = KAMAL.roles_on(host)
 
           roles.each do |role|
             execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
-            puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).execute_in_new_container(cmd, env: env))
+            puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).execute_in_new_container(cmd, env: env, detach: detach))
           end
         end
       end
@@ -147,7 +172,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
 
   desc "containers", "Show app containers on servers"
   def containers
-    on(KAMAL.hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_containers) }
+    on(KAMAL.app_hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_containers) }
   end
 
   desc "stale_containers", "Detect app stale containers"
@@ -156,7 +181,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
     stop = options[:stop]
 
     with_lock_if_stopping do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
@@ -179,22 +204,24 @@ class Kamal::Cli::App < Kamal::Cli::Base
 
   desc "images", "Show app images on servers"
   def images
-    on(KAMAL.hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_images) }
+    on(KAMAL.app_hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.app.list_images) }
   end
 
   desc "logs", "Show log lines from app on servers (use --help to show options)"
   option :since, aliases: "-s", desc: "Show lines since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
   option :lines, type: :numeric, aliases: "-n", desc: "Number of lines to show from each server"
   option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
-  option :grep_options, aliases: "-o", desc: "Additional options supplied to grep"
+  option :grep_options, desc: "Additional options supplied to grep"
   option :follow, aliases: "-f", desc: "Follow log on primary server (or specific host set by --hosts)"
   option :skip_timestamps, type: :boolean, aliases: "-T", desc: "Skip appending timestamps to logging output"
+  option :container_id, desc: "Docker container ID to fetch logs"
   def logs
     # FIXME: Catch when app containers aren't running
 
     grep = options[:grep]
     grep_options = options[:grep_options]
     since = options[:since]
+    container_id = options[:container_id]
     timestamps = !options[:skip_timestamps]
 
     if options[:follow]
@@ -203,22 +230,22 @@ class Kamal::Cli::App < Kamal::Cli::Base
       run_locally do
         info "Following logs on #{KAMAL.primary_host}..."
 
-        KAMAL.specific_roles ||= [ "web" ]
+        KAMAL.specific_roles ||= [ KAMAL.primary_role.name ]
         role = KAMAL.roles_on(KAMAL.primary_host).first
 
         app = KAMAL.app(role: role, host: host)
-        info app.follow_logs(host: KAMAL.primary_host, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
-        exec app.follow_logs(host: KAMAL.primary_host, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
+        info app.follow_logs(host: KAMAL.primary_host, container_id: container_id, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
+        exec app.follow_logs(host: KAMAL.primary_host, container_id: container_id, timestamps: timestamps, lines: lines, grep: grep, grep_options: grep_options)
       end
     else
       lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
 
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
           begin
-            puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).logs(timestamps: timestamps, since: since, lines: lines, grep: grep, grep_options: grep_options))
+            puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).logs(container_id: container_id, timestamps: timestamps, since: since, lines: lines, grep: grep, grep_options: grep_options))
           rescue SSHKit::Command::Failed
             puts_by_host host, "Nothing found"
           end
@@ -233,14 +260,44 @@ class Kamal::Cli::App < Kamal::Cli::Base
       stop
       remove_containers
       remove_images
-      remove_app_directory
+      remove_app_directories
+    end
+  end
+
+  desc "live", "Set the app to live mode"
+  def live
+    with_lock do
+      on(KAMAL.proxy_hosts) do |host|
+        roles = KAMAL.roles_on(host)
+
+        roles.each do |role|
+          execute *KAMAL.app(role: role, host: host).live if role.running_proxy?
+        end
+      end
+    end
+  end
+
+  desc "maintenance", "Set the app to maintenance mode"
+  option :drain_timeout, type: :numeric, desc: "How long to allow in-flight requests to complete (defaults to drain_timeout from config)"
+  option :message, type: :string, desc: "Message to display to clients while stopped"
+  def maintenance
+    maintenance_options = { drain_timeout: options[:drain_timeout] || KAMAL.config.drain_timeout, message: options[:message] }
+
+    with_lock do
+      on(KAMAL.proxy_hosts) do |host|
+        roles = KAMAL.roles_on(host)
+
+        roles.each do |role|
+          execute *KAMAL.app(role: role, host: host).maintenance(**maintenance_options) if role.running_proxy?
+        end
+      end
     end
   end
 
   desc "remove_container [VERSION]", "Remove app container with given version from servers", hide: true
   def remove_container(version)
     with_lock do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
@@ -254,7 +311,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
   desc "remove_containers", "Remove all app containers from servers", hide: true
   def remove_containers
     with_lock do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
@@ -268,30 +325,33 @@ class Kamal::Cli::App < Kamal::Cli::Base
   desc "remove_images", "Remove all app images from servers", hide: true
   def remove_images
     with_lock do
-      on(KAMAL.hosts) do
+      on(KAMAL.app_hosts) do
         execute *KAMAL.auditor.record("Removed all app images"), verbosity: :debug
         execute *KAMAL.app.remove_images
       end
     end
   end
 
-  desc "remove_app_directory", "Remove the service directory from servers", hide: true
-  def remove_app_directory
+  desc "remove_app_directories", "Remove the app directories from servers", hide: true
+  def remove_app_directories
     with_lock do
-      on(KAMAL.hosts) do |host|
+      on(KAMAL.app_hosts) do |host|
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
-          execute *KAMAL.auditor.record("Removed #{KAMAL.config.app_directory} on all servers", role: role), verbosity: :debug
+          execute *KAMAL.auditor.record("Removed #{KAMAL.config.app_directory}", role: role), verbosity: :debug
           execute *KAMAL.server.remove_app_directory, raise_on_non_zero_exit: false
         end
+
+        execute *KAMAL.auditor.record("Removed #{KAMAL.config.app_directory}"), verbosity: :debug
+        execute *KAMAL.app.remove_proxy_app_directory, raise_on_non_zero_exit: false
       end
     end
   end
 
   desc "version", "Show app version currently running on servers"
   def version
-    on(KAMAL.hosts) do |host|
+    on(KAMAL.app_hosts) do |host|
       role = KAMAL.roles_on(host).first
       puts_by_host host, capture_with_info(*KAMAL.app(role: role, host: host).current_running_version).strip
     end
@@ -332,4 +392,8 @@ class Kamal::Cli::App < Kamal::Cli::Base
         yield
       end
     end
+
+    def host_boot_groups
+      KAMAL.config.boot.limit ? KAMAL.app_hosts.each_slice(KAMAL.config.boot.limit).to_a : [ KAMAL.app_hosts ]
+    end
 end

lib/kamal/cli/app/assets.rb

@@ -1,4 +1,4 @@
-class Kamal::Cli::App::PrepareAssets
+class Kamal::Cli::App::Assets
   attr_reader :host, :role, :sshkit
   delegate :execute, :capture_with_info, :info, to: :sshkit
   delegate :assets?, to: :role

lib/kamal/cli/app/boot.rb

@@ -45,7 +45,7 @@ class Kamal::Cli::App::Boot
 
     def start_new_version
       audit "Booted app version #{version}"
-      hostname = "#{host.to_s[0...51].gsub(/\.+$/, '')}-#{SecureRandom.hex(6)}"
+      hostname = "#{host.to_s[0...51].chomp(".")}-#{SecureRandom.hex(6)}"
 
       execute *app.ensure_env_directory
       upload! role.secrets_io(host), role.secrets_path, mode: "0600"
@@ -70,6 +70,7 @@ class Kamal::Cli::App::Boot
     def stop_old_version(version)
       execute *app.stop(version: version), raise_on_non_zero_exit: false
       execute *app.clean_up_assets if assets?
+      execute *app.clean_up_error_pages if KAMAL.config.error_pages_path
     end
 
     def release_barrier
@@ -91,7 +92,7 @@ class Kamal::Cli::App::Boot
       if barrier.close
         info "First #{KAMAL.primary_role} container is unhealthy on #{host}, not booting any other roles"
         begin
-          error capture_with_info(*app.logs(version: version))
+          error capture_with_info(*app.logs(container_id: app.container_id_for_version(version)))
           error capture_with_info(*app.container_health_log(version: version))
         rescue SSHKit::Command::Failed
           error "Could not fetch logs for #{version}"

lib/kamal/cli/app/error_pages.rb

@@ -0,0 +1,33 @@
+class Kamal::Cli::App::ErrorPages
+  ERROR_PAGES_GLOB = "{4??.html,5??.html}"
+
+  attr_reader :host, :sshkit
+  delegate :upload!, :execute, to: :sshkit
+
+  def initialize(host, sshkit)
+    @host = host
+    @sshkit = sshkit
+  end
+
+  def run
+    if KAMAL.config.error_pages_path
+      with_error_pages_tmpdir do |local_error_pages_dir|
+        execute *KAMAL.app.create_error_pages_directory
+        upload! local_error_pages_dir, KAMAL.config.proxy_boot.error_pages_directory, mode: "0700", recursive: true
+      end
+    end
+  end
+
+  private
+    def with_error_pages_tmpdir
+      Dir.mktmpdir("kamal-error-pages") do |tmpdir|
+        error_pages_dir = File.join(tmpdir, KAMAL.config.version)
+        FileUtils.mkdir(error_pages_dir)
+
+        if (files = Dir[File.join(KAMAL.config.error_pages_path, ERROR_PAGES_GLOB)]).any?
+          FileUtils.cp(files, error_pages_dir)
+          yield error_pages_dir
+        end
+      end
+    end
+end

lib/kamal/cli/base.rb

@@ -5,7 +5,7 @@ module Kamal::Cli
   class Base < Thor
     include SSHKit::DSL
 
-    def self.exit_on_failure?() false end
+    def self.exit_on_failure?() true end
     def self.dynamic_command_class() Kamal::Cli::Alias::Command end
 
     class_option :verbose, type: :boolean, aliases: "-v", desc: "Detailed logging"
@@ -30,6 +30,7 @@ module Kamal::Cli
       else
         super
       end
+
       initialize_commander unless KAMAL.configured?
     end
 
@@ -132,7 +133,13 @@ module Kamal::Cli
 
       def run_hook(hook, **extra_details)
         if !options[:skip_hooks] && KAMAL.hook.hook_exists?(hook)
-          details = { hosts: KAMAL.hosts.join(","), command: command, subcommand: subcommand }
+          details = {
+            hosts: KAMAL.hosts.join(","),
+            roles: KAMAL.specific_roles&.join(","),
+            lock: KAMAL.holding_lock?.to_s,
+            command: command,
+            subcommand: subcommand
+          }.compact
 
           say "Running the #{hook} hook...", :magenta
           with_env KAMAL.hook.env(**details, **extra_details) do
@@ -146,12 +153,16 @@ module Kamal::Cli
       end
 
       def on(*args, &block)
+        pre_connect_if_required
+
+        super
+      end
+
+      def pre_connect_if_required
         if !KAMAL.connected?
           run_hook "pre-connect"
           KAMAL.connected = true
         end
-
-        super
       end
 
       def command
@@ -194,5 +205,19 @@ module Kamal::Cli
         ENV.clear
         ENV.update(current_env)
       end
+
+      def ensure_docker_installed
+        run_locally do
+          begin
+            execute *KAMAL.builder.ensure_docker_installed
+          rescue SSHKit::Command::Failed => e
+            error = e.message =~ /command not found/ ?
+              "Docker is not installed locally" :
+              "Docker buildx plugin is not installed locally"
+
+            raise DependencyError, error
+          end
+        end
+      end
   end
 end

lib/kamal/cli/build.rb

@@ -5,15 +5,18 @@ class Kamal::Cli::Build < Kamal::Cli::Base
 
   desc "deliver", "Build app and push app image to registry then pull image on servers"
   def deliver
-    push
-    pull
+    invoke :push
+    invoke :pull
   end
 
   desc "push", "Build and push app image to registry"
+  option :output, type: :string, default: "registry", banner: "export_type", desc: "Exported type for the build result, and may be any exported type supported by 'buildx --output'."
   def push
     cli = self
 
-    verify_local_dependencies
+    ensure_docker_installed
+    login_to_registry_locally
+
     run_hook "pre-build"
 
     uncommitted_changes = Kamal::Git.uncommitted_changes
@@ -49,7 +52,7 @@ class Kamal::Cli::Build < Kamal::Cli::Base
         end
 
         # Get the command here to ensure the Dir.chdir doesn't interfere with it
-        push = KAMAL.builder.push
+        push = KAMAL.builder.push(cli.options[:output])
 
         KAMAL.with_verbosity(:debug) do
           Dir.chdir(KAMAL.config.builder.build_directory) { execute *push }
@@ -60,14 +63,16 @@ class Kamal::Cli::Build < Kamal::Cli::Base
 
   desc "pull", "Pull app image from registry onto servers"
   def pull
+    login_to_registry_remotely
+
     if (first_hosts = mirror_hosts).any?
       #  Pull on a single host per mirror first to seed them
       say "Pulling image on #{first_hosts.join(", ")} to seed the #{"mirror".pluralize(first_hosts.count)}...", :magenta
       pull_on_hosts(first_hosts)
       say "Pulling image on remaining hosts...", :magenta
-      pull_on_hosts(KAMAL.hosts - first_hosts)
+      pull_on_hosts(KAMAL.app_hosts - first_hosts)
     else
-      pull_on_hosts(KAMAL.hosts)
+      pull_on_hosts(KAMAL.app_hosts)
     end
   end
 
@@ -108,21 +113,42 @@ class Kamal::Cli::Build < Kamal::Cli::Base
     end
   end
 
-  private
-    def verify_local_dependencies
-      run_locally do
-        begin
-          execute *KAMAL.builder.ensure_local_dependencies_installed
-        rescue SSHKit::Command::Failed => e
-          build_error = e.message =~ /command not found/ ?
-            "Docker is not installed locally" :
-            "Docker buildx plugin is not installed locally"
+  desc "dev", "Build using the working directory, tag it as dirty, and push to local image store."
+  option :output, type: :string, default: "docker", banner: "export_type", desc: "Exported type for the build result, and may be any exported type supported by 'buildx --output'."
+  def dev
+    cli = self
 
-          raise BuildError, build_error
+    ensure_docker_installed
+
+    docker_included_files = Set.new(Kamal::Docker.included_files)
+    git_uncommitted_files = Set.new(Kamal::Git.uncommitted_files)
+    git_untracked_files = Set.new(Kamal::Git.untracked_files)
+
+    docker_uncommitted_files = docker_included_files & git_uncommitted_files
+    if docker_uncommitted_files.any?
+      say "WARNING: Files with uncommitted changes will be present in the dev container:", :yellow
+      docker_uncommitted_files.sort.each { |f| say "  #{f}", :yellow }
+      say
+    end
+
+    docker_untracked_files = docker_included_files & git_untracked_files
+    if docker_untracked_files.any?
+      say "WARNING: Untracked files will be present in the dev container:", :yellow
+      docker_untracked_files.sort.each { |f| say "  #{f}", :yellow }
+      say
+    end
+
+    with_env(KAMAL.config.builder.secrets) do
+      run_locally do
+        build = KAMAL.builder.push(cli.options[:output], tag_as_dirty: true)
+        KAMAL.with_verbosity(:debug) do
+          execute(*build)
         end
       end
     end
+  end
 
+  private
     def connect_to_remote_host(remote_host)
       remote_uri = URI.parse(remote_host)
       if remote_uri.scheme == "ssh"
@@ -137,9 +163,9 @@ class Kamal::Cli::Build < Kamal::Cli::Base
     end
 
     def mirror_hosts
-      if KAMAL.hosts.many?
+      if KAMAL.app_hosts.many?
         mirror_hosts = Concurrent::Hash.new
-        on(KAMAL.hosts) do |host|
+        on(KAMAL.app_hosts) do |host|
           first_mirror = capture_with_info(*KAMAL.builder.first_mirror).strip.presence
           mirror_hosts[first_mirror] ||= host.to_s if first_mirror
         rescue SSHKit::Command::Failed => e
@@ -159,4 +185,16 @@ class Kamal::Cli::Build < Kamal::Cli::Base
         execute *KAMAL.builder.validate_image
       end
     end
+
+    def login_to_registry_locally
+      run_locally do
+        execute *KAMAL.registry.login
+      end
+    end
+
+    def login_to_registry_remotely
+      on(KAMAL.app_hosts) do
+        execute *KAMAL.registry.login
+      end
+    end
 end

lib/kamal/cli/main.rb

@@ -9,21 +9,17 @@ class Kamal::Cli::Main < Kamal::Cli::Base
         say "Ensure Docker is installed...", :magenta
         invoke "kamal:cli:server:bootstrap", [], invoke_options
 
-        invoke "kamal:cli:accessory:boot", [ "all" ], invoke_options
-        deploy
+        deploy(boot_accessories: true)
       end
     end
   end
 
   desc "deploy", "Deploy app to servers"
   option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
-  def deploy
+  def deploy(boot_accessories: false)
     runtime = print_runtime do
       invoke_options = deploy_options
 
-      say "Log into image registry...", :magenta
-      invoke "kamal:cli:registry:login", [], invoke_options.merge(skip_local: options[:skip_push])
-
       if options[:skip_push]
         say "Pull app image...", :magenta
         invoke "kamal:cli:build:pull", [], invoke_options
@@ -38,6 +34,8 @@ class Kamal::Cli::Main < Kamal::Cli::Base
         say "Ensure kamal-proxy is running...", :magenta
         invoke "kamal:cli:proxy:boot", [], invoke_options
 
+        invoke "kamal:cli:accessory:boot", [ "all" ], invoke_options if boot_accessories
+
         say "Detect stale containers...", :magenta
         invoke "kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true)
 
@@ -51,7 +49,7 @@ class Kamal::Cli::Main < Kamal::Cli::Base
     run_hook "post-deploy", secrets: true, runtime: runtime.round.to_s
   end
 
-  desc "redeploy", "Deploy app to servers without bootstrapping servers, starting kamal-proxy, pruning, and registry login"
+  desc "redeploy", "Deploy app to servers without bootstrapping servers, starting kamal-proxy and pruning"
   option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
   def redeploy
     runtime = print_runtime do
@@ -135,7 +133,7 @@ class Kamal::Cli::Main < Kamal::Cli::Base
     puts "No documentation found for #{section}"
   end
 
-  desc "init", "Create config stub in config/deploy.yml and env stub in .env"
+  desc "init", "Create config stub in config/deploy.yml and secrets stub in .kamal"
   option :bundle, type: :boolean, default: false, desc: "Add Kamal to the Gemfile and create a bin/kamal binstub"
   def init
     require "fileutils"
@@ -196,10 +194,10 @@ class Kamal::Cli::Main < Kamal::Cli::Base
     confirming "This will replace Traefik with kamal-proxy and restart all accessories" do
       with_lock do
         if options[:rolling]
-          (KAMAL.hosts | KAMAL.accessory_hosts).each do |host|
+          KAMAL.hosts.each do |host|
             KAMAL.with_specific_hosts(host) do
               say "Upgrading #{host}...", :magenta
-              if KAMAL.hosts.include?(host)
+              if KAMAL.app_hosts.include?(host)
                 invoke "kamal:cli:proxy:upgrade", [], options.merge(confirmed: true, rolling: false)
                 reset_invocation(Kamal::Cli::Proxy)
               end
@@ -255,7 +253,7 @@ class Kamal::Cli::Main < Kamal::Cli::Base
   private
     def container_available?(version)
       begin
-        on(KAMAL.hosts) do
+        on(KAMAL.app_hosts) do
           KAMAL.roles_on(host).each do |role|
             container_id = capture_with_info(*KAMAL.app(role: role, host: host).container_id_for_version(version))
             raise "Container not found" unless container_id.present?

lib/kamal/cli/proxy.rb

@@ -13,38 +13,87 @@ class Kamal::Cli::Proxy < Kamal::Cli::Base
 
         version = capture_with_info(*KAMAL.proxy.version).strip.presence
 
-        if version && Kamal::Utils.older_version?(version, Kamal::Configuration::PROXY_MINIMUM_VERSION)
-          raise "kamal-proxy version #{version} is too old, please reboot to update to at least #{Kamal::Configuration::PROXY_MINIMUM_VERSION}"
+        if version && Kamal::Utils.older_version?(version, Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION)
+          raise "kamal-proxy version #{version} is too old, run `kamal proxy reboot` in order to update to at least #{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}"
         end
+        execute *KAMAL.proxy.ensure_apps_config_directory
         execute *KAMAL.proxy.start_or_run
       end
     end
   end
 
-  desc "boot_config <set|get|clear>", "Mange kamal-proxy boot configuration"
+  desc "boot_config <set|get|reset>", "Manage kamal-proxy boot configuration"
   option :publish, type: :boolean, default: true, desc: "Publish the proxy ports on the host"
-  option :http_port, type: :numeric, default: Kamal::Configuration::PROXY_HTTP_PORT, desc: "HTTP port to publish on the host"
-  option :https_port, type: :numeric, default: Kamal::Configuration::PROXY_HTTPS_PORT, desc: "HTTPS port to publish on the host"
+  option :publish_host_ip, type: :string, repeatable: true, default: nil, desc: "Host IP address to bind HTTP/HTTPS traffic to. Defaults to all interfaces"
+  option :http_port, type: :numeric, default: Kamal::Configuration::Proxy::Boot::DEFAULT_HTTP_PORT, desc: "HTTP port to publish on the host"
+  option :https_port, type: :numeric, default: Kamal::Configuration::Proxy::Boot::DEFAULT_HTTPS_PORT, desc: "HTTPS port to publish on the host"
+  option :log_max_size, type: :string, default: Kamal::Configuration::Proxy::Boot::DEFAULT_LOG_MAX_SIZE, desc: "Max size of proxy logs"
+  option :registry, type: :string, default: nil, desc: "Registry to use for the proxy image"
+  option :repository, type: :string, default: nil, desc: "Repository for the proxy image"
+  option :image_version, type: :string, default: nil, desc: "Version of the proxy to run"
+  option :metrics_port, type: :numeric, default: nil, desc: "Port to report prometheus metrics on"
+  option :debug, type: :boolean, default: false, desc: "Whether to run the proxy in debug mode"
   option :docker_options, type: :array, default: [], desc: "Docker options to pass to the proxy container", banner: "option=value option2=value2"
   def boot_config(subcommand)
+    proxy_boot_config = KAMAL.config.proxy_boot
+
     case subcommand
     when "set"
       boot_options = [
-        *(KAMAL.config.proxy_publish_args(options[:http_port], options[:https_port]) if options[:publish]),
+        *(proxy_boot_config.publish_args(options[:http_port], options[:https_port], options[:publish_host_ip]) if options[:publish]),
+        *(proxy_boot_config.logging_args(options[:log_max_size])),
+        *("--expose=#{options[:metrics_port]}" if options[:metrics_port]),
         *options[:docker_options].map { |option| "--#{option}" }
       ]
 
+      image = [
+        options[:registry].presence,
+        options[:repository].presence || proxy_boot_config.repository_name,
+        proxy_boot_config.image_name
+      ].compact.join("/")
+
+      image_version = options[:image_version]
+
+      run_command_options = { debug: options[:debug] || nil, "metrics-port": options[:metrics_port] }.compact
+      run_command = "kamal-proxy run #{Kamal::Utils.optionize(run_command_options).join(" ")}" if run_command_options.any?
+
       on(KAMAL.proxy_hosts) do |host|
         execute(*KAMAL.proxy.ensure_proxy_directory)
-        upload! StringIO.new(boot_options.join(" ")), KAMAL.config.proxy_options_file
+        if boot_options != proxy_boot_config.default_boot_options
+          upload! StringIO.new(boot_options.join(" ")), proxy_boot_config.options_file
+        else
+          execute *KAMAL.proxy.reset_boot_options, raise_on_non_zero_exit: false
+        end
+
+        if image != proxy_boot_config.image_default
+          upload! StringIO.new(image), proxy_boot_config.image_file
+        else
+          execute *KAMAL.proxy.reset_image, raise_on_non_zero_exit: false
+        end
+
+        if image_version
+          upload! StringIO.new(image_version), proxy_boot_config.image_version_file
+        else
+          execute *KAMAL.proxy.reset_image_version, raise_on_non_zero_exit: false
+        end
+
+        if run_command
+          upload! StringIO.new(run_command), proxy_boot_config.run_command_file
+        else
+          execute *KAMAL.proxy.reset_run_command, raise_on_non_zero_exit: false
+        end
       end
     when "get"
+
       on(KAMAL.proxy_hosts) do |host|
-        puts "Host #{host}: #{capture_with_info(*KAMAL.proxy.get_boot_options)}"
+        puts "Host #{host}: #{capture_with_info(*KAMAL.proxy.boot_config)}"
       end
     when "reset"
       on(KAMAL.proxy_hosts) do |host|
-        execute *KAMAL.proxy.reset_boot_options
+        execute *KAMAL.proxy.reset_boot_options, raise_on_non_zero_exit: false
+        execute *KAMAL.proxy.reset_image, raise_on_non_zero_exit: false
+        execute *KAMAL.proxy.reset_image_version, raise_on_non_zero_exit: false
+        execute *KAMAL.proxy.reset_run_command, raise_on_non_zero_exit: false
       end
     else
       raise ArgumentError, "Unknown boot_config subcommand #{subcommand}"
@@ -65,12 +114,10 @@ class Kamal::Cli::Proxy < Kamal::Cli::Base
             execute *KAMAL.auditor.record("Rebooted proxy"), verbosity: :debug
             execute *KAMAL.registry.login
 
-            "Stopping and removing Traefik on #{host}, if running..."
-            execute *KAMAL.proxy.cleanup_traefik
-
             "Stopping and removing kamal-proxy on #{host}, if running..."
             execute *KAMAL.proxy.stop, raise_on_non_zero_exit: false
             execute *KAMAL.proxy.remove_container
+            execute *KAMAL.proxy.ensure_apps_config_directory
 
             execute *KAMAL.proxy.run
 

lib/kamal/cli/registry.rb

@@ -3,6 +3,8 @@ class Kamal::Cli::Registry < Kamal::Cli::Base
   option :skip_local, aliases: "-L", type: :boolean, default: false, desc: "Skip local login"
   option :skip_remote, aliases: "-R", type: :boolean, default: false, desc: "Skip remote login"
   def login
+    ensure_docker_installed unless options[:skip_local]
+
     run_locally    { execute *KAMAL.registry.login } unless options[:skip_local]
     on(KAMAL.hosts) { execute *KAMAL.registry.login } unless options[:skip_remote]
   end

lib/kamal/cli/secrets.rb

@@ -1,11 +1,17 @@
 class Kamal::Cli::Secrets < Kamal::Cli::Base
   desc "fetch [SECRETS...]", "Fetch secrets from a vault"
   option :adapter, type: :string, aliases: "-a", required: true, desc: "Which vault adapter to use"
-  option :account, type: :string, required: true, desc: "The account identifier or username"
+  option :account, type: :string, required: false, desc: "The account identifier or username"
   option :from, type: :string, required: false, desc: "A vault or folder to fetch the secrets from"
   option :inline, type: :boolean, required: false, hidden: true
   def fetch(*secrets)
-    results = adapter(options[:adapter]).fetch(secrets, **options.slice(:account, :from).symbolize_keys)
+    adapter = initialize_adapter(options[:adapter])
+
+    if adapter.requires_account? && options[:account].blank?
+      return puts "No value provided for required options '--account'"
+    end
+
+    results = adapter.fetch(secrets, **options.slice(:account, :from).symbolize_keys)
 
     return_or_puts JSON.dump(results).shellescape, inline: options[:inline]
   end
@@ -21,8 +27,15 @@ class Kamal::Cli::Secrets < Kamal::Cli::Base
     return_or_puts value, inline: options[:inline]
   end
 
+  desc "print", "Print the secrets (for debugging)"
+  def print
+    KAMAL.config.secrets.to_h.each do |key, value|
+      puts "#{key}=#{value}"
+    end
+  end
+
   private
-    def adapter(adapter)
+    def initialize_adapter(adapter)
       Kamal::Secrets::Adapters.lookup(adapter)
     end
 

lib/kamal/cli/server.rb

@@ -2,8 +2,10 @@ class Kamal::Cli::Server < Kamal::Cli::Base
   desc "exec", "Run a custom command on the server (use --help to show options)"
   option :interactive, type: :boolean, aliases: "-i", default: false, desc: "Run the command interactively (use for console/bash)"
   def exec(*cmd)
+    pre_connect_if_required
+
     cmd = Kamal::Utils.join_commands(cmd)
-    hosts = KAMAL.hosts | KAMAL.accessory_hosts
+    hosts = KAMAL.hosts
 
     case
     when options[:interactive]
@@ -27,7 +29,7 @@ class Kamal::Cli::Server < Kamal::Cli::Base
     with_lock do
       missing = []
 
-      on(KAMAL.hosts | KAMAL.accessory_hosts) do |host|
+      on(KAMAL.hosts) do |host|
         unless execute(*KAMAL.docker.installed?, raise_on_non_zero_exit: false)
           if execute(*KAMAL.docker.superuser?, raise_on_non_zero_exit: false)
             info "Missing Docker on #{host}. Installing…"

lib/kamal/cli/templates/deploy.yml

@@ -13,11 +13,15 @@ servers:
   #     - 192.168.0.1
   #   cmd: bin/jobs
 
-# Enable SSL auto certification via Let's Encrypt (and allow for multiple apps on one server).
-# Set ssl: false if using something like Cloudflare to terminate SSL (but keep host!).
+# Enable SSL auto certification via Let's Encrypt and allow for multiple apps on a single web server.
+# Remove this section when using multiple web servers and ensure you terminate SSL at your load balancer.
+#
+# Note: If using Cloudflare, set encryption mode in SSL/TLS setting to "Full" to enable CF-to-app encryption.
 proxy:
   ssl: true
   host: app.example.com
+  # Proxy connects to your container on port 80 by default.
+  # app_port: 3000
 
 # Credentials for your image host.
 registry:
@@ -32,6 +36,9 @@ registry:
 # Configure builder setup.
 builder:
   arch: amd64
+  # Pass in additional build args needed for your Dockerfile.
+  # args:
+  #   RUBY_VERSION: <%= ENV["RBENV_VERSION"] || ENV["rvm_ruby_string"] || "#{RUBY_ENGINE}-#{RUBY_ENGINE_VERSION}" %>
 
 # Inject ENV variables into containers (secrets come from .kamal/secrets).
 #
@@ -42,7 +49,7 @@ builder:
 #     - RAILS_MASTER_KEY
 
 # Aliases are triggered with "bin/kamal <alias>". You can overwrite arguments on invocation:
-# "bin/kamal logs -r job" will tail logs from the first server in the job section.
+# "bin/kamal app logs -r job" will tail logs from the first server in the job section.
 #
 # aliases:
 #   shell: app exec --interactive --reuse "bash"
@@ -87,7 +94,7 @@ builder:
 #     directories:
 #       - data:/var/lib/mysql
 #   redis:
-#     image: redis:7.0
+#     image: valkey/valkey:8
 #     host: 192.168.0.2
 #     port: 6379
 #     directories:

lib/kamal/cli/templates/sample_hooks/docker-setup.sample

@@ -1,13 +1,3 @@
-#!/usr/bin/env ruby
+#!/bin/sh
 
-# A sample docker-setup hook
-#
-# Sets up a Docker network on defined hosts which can then be used by the application’s containers
-
-hosts = ENV["KAMAL_HOSTS"].split(",")
-
-hosts.each do |ip|
-  destination = "root@#{ip}"
-  puts "Creating a Docker network \"kamal\" on #{destination}"
-  `ssh #{destination} docker network create kamal`
-end
+echo "Docker set up on $KAMAL_HOSTS..."

lib/kamal/cli/templates/sample_hooks/post-app-boot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Booted app version $KAMAL_VERSION on $KAMAL_HOSTS..."

lib/kamal/cli/templates/sample_hooks/post-deploy.sample

@@ -7,7 +7,7 @@
 # KAMAL_PERFORMER
 # KAMAL_VERSION
 # KAMAL_HOSTS
-# KAMAL_ROLE (if set)
+# KAMAL_ROLES (if set)
 # KAMAL_DESTINATION (if set)
 # KAMAL_RUNTIME
 

lib/kamal/cli/templates/sample_hooks/pre-app-boot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Booting app version $KAMAL_VERSION on $KAMAL_HOSTS..."

lib/kamal/cli/templates/sample_hooks/pre-build.sample

@@ -13,7 +13,7 @@
 # KAMAL_PERFORMER
 # KAMAL_VERSION
 # KAMAL_HOSTS
-# KAMAL_ROLE (if set)
+# KAMAL_ROLES (if set)
 # KAMAL_DESTINATION (if set)
 
 if [ -n "$(git status --porcelain)" ]; then

lib/kamal/cli/templates/sample_hooks/pre-connect.sample

@@ -9,7 +9,7 @@
 # KAMAL_PERFORMER
 # KAMAL_VERSION
 # KAMAL_HOSTS
-# KAMAL_ROLE (if set)
+# KAMAL_ROLES (if set)
 # KAMAL_DESTINATION (if set)
 # KAMAL_RUNTIME
 

lib/kamal/cli/templates/sample_hooks/pre-deploy.sample

@@ -13,7 +13,7 @@
 # KAMAL_HOSTS
 # KAMAL_COMMAND
 # KAMAL_SUBCOMMAND
-# KAMAL_ROLE (if set)
+# KAMAL_ROLES (if set)
 # KAMAL_DESTINATION (if set)
 
 # Only check the build status for production deployments
@@ -82,11 +82,12 @@ end
 
 $stdout.sync = true
 
-puts "Checking build status..."
-attempts = 0
-checks = GithubStatusChecks.new
-
 begin
+  puts "Checking build status..."
+
+  attempts = 0
+  checks = GithubStatusChecks.new
+
   loop do
     case checks.state
     when "success"

lib/kamal/commander.rb

@@ -4,13 +4,20 @@ require "active_support/core_ext/object/blank"
 
 class Kamal::Commander
   attr_accessor :verbosity, :holding_lock, :connected
-  delegate :hosts, :roles, :primary_host, :primary_role, :roles_on, :proxy_hosts, :accessory_hosts, to: :specifics
+  attr_reader :specific_roles, :specific_hosts
+  delegate :hosts, :roles, :primary_host, :primary_role, :roles_on, :app_hosts, :proxy_hosts, :accessory_hosts, to: :specifics
 
   def initialize
+    reset
+  end
+
+  def reset
     self.verbosity = :info
-    self.holding_lock = false
+    self.holding_lock = ENV["KAMAL_LOCK"] == "true"
     self.connected = false
-    @specifics = nil
+    @specifics = @specific_roles = @specific_hosts = nil
+    @config = @config_kwargs = nil
+    @commands = {}
   end
 
   def config
@@ -28,8 +35,6 @@ class Kamal::Commander
     @config || @config_kwargs
   end
 
-  attr_reader :specific_roles, :specific_hosts
-
   def specific_primary!
     @specifics = nil
     if specific_roles.present?
@@ -76,11 +81,6 @@ class Kamal::Commander
     config.accessories&.collect(&:name) || []
   end
 
-  def accessories_on(host)
-    config.accessories.select { |accessory| accessory.hosts.include?(host.to_s) }.map(&:name)
-  end
-
-
   def app(role: nil, host: nil)
     Kamal::Commands::App.new(config, role: role, host: host)
   end
@@ -94,42 +94,41 @@ class Kamal::Commander
   end
 
   def builder
-    @builder ||= Kamal::Commands::Builder.new(config)
+    @commands[:builder] ||= Kamal::Commands::Builder.new(config)
   end
 
   def docker
-    @docker ||= Kamal::Commands::Docker.new(config)
+    @commands[:docker] ||= Kamal::Commands::Docker.new(config)
   end
 
   def hook
-    @hook ||= Kamal::Commands::Hook.new(config)
+    @commands[:hook] ||= Kamal::Commands::Hook.new(config)
   end
 
   def lock
-    @lock ||= Kamal::Commands::Lock.new(config)
+    @commands[:lock] ||= Kamal::Commands::Lock.new(config)
   end
 
   def proxy
-    @proxy ||= Kamal::Commands::Proxy.new(config)
+    @commands[:proxy] ||= Kamal::Commands::Proxy.new(config)
   end
 
   def prune
-    @prune ||= Kamal::Commands::Prune.new(config)
+    @commands[:prune] ||= Kamal::Commands::Prune.new(config)
   end
 
   def registry
-    @registry ||= Kamal::Commands::Registry.new(config)
+    @commands[:registry] ||= Kamal::Commands::Registry.new(config)
   end
 
   def server
-    @server ||= Kamal::Commands::Server.new(config)
+    @commands[:server] ||= Kamal::Commands::Server.new(config)
   end
 
   def alias(name)
     config.aliases[name]
   end
 
-
   def with_verbosity(level)
     old_level = self.verbosity
 
@@ -142,14 +141,6 @@ class Kamal::Commander
     SSHKit.config.output_verbosity = old_level
   end
 
-  def boot_strategy
-    if config.boot.limit.present?
-      { in: :groups, limit: config.boot.limit, wait: config.boot.wait }
-    else
-      {}
-    end
-  end
-
   def holding_lock?
     self.holding_lock
   end

lib/kamal/commander/specifics.rb

@@ -18,6 +18,10 @@ class Kamal::Commander::Specifics
     roles.select { |role| role.hosts.include?(host.to_s) }
   end
 
+  def app_hosts
+    config.app_hosts & specified_hosts
+  end
+
   def proxy_hosts
     config.proxy_hosts & specified_hosts
   end
@@ -43,7 +47,12 @@ class Kamal::Commander::Specifics
     end
 
     def specified_hosts
-      (specific_hosts || config.all_hosts) \
-        .select { |host| (specific_roles || config.roles).flat_map(&:hosts).include?(host) }
+      specified_hosts = specific_hosts || config.all_hosts
+
+      if (specific_role_hosts = specific_roles&.flat_map(&:hosts)).present?
+        specified_hosts.select { |host| specific_role_hosts.include?(host) }
+      else
+        specified_hosts
+      end
     end
 end

lib/kamal/commands/accessory.rb

@@ -1,8 +1,10 @@
 class Kamal::Commands::Accessory < Kamal::Commands::Base
+  include Proxy
+
   attr_reader :accessory_config
   delegate :service_name, :image, :hosts, :port, :files, :directories, :cmd,
-           :publish_args, :env_args, :volume_args, :label_args, :option_args,
-           :secrets_io, :secrets_path, :env_directory,
+           :network_args, :publish_args, :env_args, :volume_args, :label_args, :option_args,
+           :secrets_io, :secrets_path, :env_directory, :proxy, :running_proxy?, :registry,
            to: :accessory_config
 
   def initialize(config, name:)
@@ -15,7 +17,7 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
       "--name", service_name,
       "--detach",
       "--restart", "unless-stopped",
-      "--network", "kamal",
+      *network_args,
       *config.logging_args,
       *publish_args,
       *env_args,
@@ -34,11 +36,10 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
     docker :container, :stop, service_name
   end
 
-  def info
-    docker :ps, *service_filter
+  def info(all: false, quiet: false)
+    docker :ps, *("-a" if all), *("-q" if quiet), *service_filter
   end
 
-
   def logs(timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil)
     pipe \
       docker(:logs, service_name, (" --since #{since}" if since), (" --tail #{lines}" if lines), ("--timestamps" if timestamps), "2>&1"),
@@ -52,7 +53,6 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
         (%(grep "#{grep}"#{" #{grep_options}" if grep_options}) if grep)
   end
 
-
   def execute_in_existing_container(*command, interactive: false)
     docker :exec,
       ("-it" if interactive),
@@ -64,7 +64,7 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
     docker :run,
       ("-it" if interactive),
       "--rm",
-      "--network", "kamal",
+      *network_args,
       *env_args,
       *volume_args,
       image,
@@ -83,7 +83,6 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
     super command, host: hosts.first
   end
 
-
   def ensure_local_file_present(local_file)
     if !local_file.is_a?(StringIO) && !Pathname.new(local_file).exist?
       raise "Missing file: #{local_file}"

lib/kamal/commands/accessory/proxy.rb

@@ -0,0 +1,16 @@
+module Kamal::Commands::Accessory::Proxy
+  delegate :container_name, to: :"config.proxy_boot", prefix: :proxy
+
+  def deploy(target:)
+    proxy_exec :deploy, service_name, *proxy.deploy_command_args(target: target)
+  end
+
+  def remove
+    proxy_exec :remove, service_name
+  end
+
+  private
+    def proxy_exec(*command)
+      docker :exec, proxy_container_name, "kamal-proxy", *command
+    end
+end

lib/kamal/commands/app.rb

@@ -1,5 +1,5 @@
 class Kamal::Commands::App < Kamal::Commands::Base
-  include Assets, Containers, Execution, Images, Logging, Proxy
+  include Assets, Containers, ErrorPages, Execution, Images, Logging, Proxy
 
   ACTIVE_DOCKER_STATUSES = [ :running, :restarting ]
 
@@ -47,7 +47,7 @@ class Kamal::Commands::App < Kamal::Commands::Base
   end
 
   def info
-    docker :ps, *filter_args
+    docker :ps, *container_filter_args
   end
 
 
@@ -67,7 +67,7 @@ class Kamal::Commands::App < Kamal::Commands::Base
 
   def list_versions(*docker_args, statuses: nil)
     pipe \
-      docker(:ps, *filter_args(statuses: statuses), *docker_args, "--format", '"{{.Names}}"'),
+      docker(:ps, *container_filter_args(statuses: statuses), *docker_args, "--format", '"{{.Names}}"'),
       extract_version_from_name
   end
 
@@ -91,11 +91,15 @@ class Kamal::Commands::App < Kamal::Commands::Base
     end
 
     def latest_container(format:, filters: nil)
-      docker :ps, "--latest", *format, *filter_args(statuses: ACTIVE_DOCKER_STATUSES), argumentize("--filter", filters)
+      docker :ps, "--latest", *format, *container_filter_args(statuses: ACTIVE_DOCKER_STATUSES), argumentize("--filter", filters)
     end
 
-    def filter_args(statuses: nil)
-      argumentize "--filter", filters(statuses: statuses)
+    def container_filter_args(statuses: nil)
+      argumentize "--filter", container_filters(statuses: statuses)
+    end
+
+    def image_filter_args
+      argumentize "--filter", image_filters
     end
 
     def extract_version_from_name
@@ -103,13 +107,17 @@ class Kamal::Commands::App < Kamal::Commands::Base
       %(while read line; do echo ${line##{role.container_prefix}-}; done)
     end
 
-    def filters(statuses: nil)
+    def container_filters(statuses: nil)
       [ "label=service=#{config.service}" ].tap do |filters|
-        filters << "label=destination=#{config.destination}" if config.destination
+        filters << "label=destination=#{config.destination}"
         filters << "label=role=#{role}" if role
         statuses&.each do |status|
           filters << "status=#{status}"
         end
       end
     end
+
+    def image_filters
+      [ "label=service=#{config.service}" ]
+    end
 end

lib/kamal/commands/app/assets.rb

@@ -4,10 +4,10 @@ module Kamal::Commands::App::Assets
 
     combine \
       make_directory(role.asset_extracted_directory),
-      [ *docker(:stop, "-t 1", asset_container, "2> /dev/null"), "|| true" ],
-      docker(:run, "--name", asset_container, "--detach", "--rm", "--entrypoint", "sleep", config.absolute_image, "1000000"),
-      docker(:cp, "-L", "#{asset_container}:#{role.asset_path}/.", role.asset_extracted_directory),
-      docker(:stop, "-t 1", asset_container),
+      [ *docker(:container, :rm, asset_container, "2> /dev/null"), "|| true" ],
+      docker(:container, :create, "--name", asset_container, config.absolute_image),
+      docker(:container, :cp, "-L", "#{asset_container}:#{role.asset_path}/.", role.asset_extracted_directory),
+      docker(:container, :rm, asset_container),
       by: "&&"
   end
 

lib/kamal/commands/app/containers.rb

@@ -2,7 +2,7 @@ module Kamal::Commands::App::Containers
   DOCKER_HEALTH_LOG_FORMAT    = "'{{json .State.Health}}'"
 
   def list_containers
-    docker :container, :ls, "--all", *filter_args
+    docker :container, :ls, "--all", *container_filter_args
   end
 
   def list_container_names
@@ -20,7 +20,7 @@ module Kamal::Commands::App::Containers
   end
 
   def remove_containers
-    docker :container, :prune, "--force", *filter_args
+    docker :container, :prune, "--force", *container_filter_args
   end
 
   def container_health_log(version:)

lib/kamal/commands/app/error_pages.rb

@@ -0,0 +1,9 @@
+module Kamal::Commands::App::ErrorPages
+  def create_error_pages_directory
+    make_directory(config.proxy_boot.error_pages_directory)
+  end
+
+  def clean_up_error_pages
+    [ :find, config.proxy_boot.error_pages_directory, "-mindepth", "1", "-maxdepth", "1", "!", "-name", KAMAL.config.version, "-exec", "rm", "-rf", "{} +" ]
+  end
+end

lib/kamal/commands/app/execution.rb

@@ -7,13 +7,15 @@ module Kamal::Commands::App::Execution
       *command
   end
 
-  def execute_in_new_container(*command, interactive: false, env:)
+  def execute_in_new_container(*command, interactive: false, detach: false, env:)
     docker :run,
       ("-it" if interactive),
-      "--rm",
+      ("--detach" if detach),
+      ("--rm" unless detach),
       "--network", "kamal",
       *role&.env_args(host),
       *argumentize("--env", env),
+      *role.logging_args,
       *config.volume_args,
       *role&.option_args,
       config.absolute_image,

lib/kamal/commands/app/images.rb

@@ -4,7 +4,7 @@ module Kamal::Commands::App::Images
   end
 
   def remove_images
-    docker :image, :prune, "--all", "--force", *filter_args
+    docker :image, :prune, "--all", "--force", *image_filter_args
   end
 
   def tag_latest_image

lib/kamal/commands/app/logging.rb

@@ -1,18 +1,28 @@
 module Kamal::Commands::App::Logging
-  def logs(version: nil, timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil)
+  def logs(container_id: nil, timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil)
     pipe \
-      version ? container_id_for_version(version) : current_running_container_id,
+      container_id_command(container_id),
       "xargs docker logs#{" --timestamps" if timestamps}#{" --since #{since}" if since}#{" --tail #{lines}" if lines} 2>&1",
       ("grep '#{grep}'#{" #{grep_options}" if grep_options}" if grep)
   end
 
-  def follow_logs(host:, timestamps: true, lines: nil, grep: nil, grep_options: nil)
+  def follow_logs(host:, container_id: nil, timestamps: true, lines: nil, grep: nil, grep_options: nil)
     run_over_ssh \
       pipe(
-        current_running_container_id,
+        container_id_command(container_id),
         "xargs docker logs#{" --timestamps" if timestamps}#{" --tail #{lines}" if lines} --follow 2>&1",
         (%(grep "#{grep}"#{" #{grep_options}" if grep_options}) if grep)
       ),
       host: host
   end
+
+  private
+
+  def container_id_command(container_id)
+    case container_id
+    when Array then container_id
+    when String, Symbol then "echo #{container_id}"
+    else current_running_container_id
+    end
+  end
 end

lib/kamal/commands/app/proxy.rb

@@ -1,12 +1,24 @@
 module Kamal::Commands::App::Proxy
-  delegate :proxy_container_name, to: :config
+  delegate :container_name, to: :"config.proxy_boot", prefix: :proxy
 
   def deploy(target:)
     proxy_exec :deploy, role.container_prefix, *role.proxy.deploy_command_args(target: target)
   end
 
-  def remove(target:)
-    proxy_exec :remove, role.container_prefix, *role.proxy.remove_command_args(target: target)
+  def remove
+    proxy_exec :remove, role.container_prefix
+  end
+
+  def live
+    proxy_exec :resume, role.container_prefix
+  end
+
+  def maintenance(**options)
+    proxy_exec :stop, role.container_prefix, *role.proxy.stop_command_args(**options)
+  end
+
+  def remove_proxy_app_directory
+    remove_directory config.proxy_boot.app_directory
   end
 
   private

lib/kamal/commands/auditor.rb

@@ -1,5 +1,6 @@
 class Kamal::Commands::Auditor < Kamal::Commands::Base
   attr_reader :details
+  delegate :escape_shell_value, to: Kamal::Utils
 
   def initialize(config, **details)
     super(config)
@@ -9,11 +10,8 @@ class Kamal::Commands::Auditor < Kamal::Commands::Base
   # Runs remotely
   def record(line, **details)
     combine \
-      [ :mkdir, "-p", config.run_directory ],
-      append(
-        [ :echo, audit_tags(**details).except(:version, :service_version, :service).to_s, line ],
-        audit_log_file
-      )
+      make_run_directory,
+      append([ :echo, escape_shell_value(audit_line(line, **details)) ], audit_log_file)
   end
 
   def reveal
@@ -30,4 +28,12 @@ class Kamal::Commands::Auditor < Kamal::Commands::Base
     def audit_tags(**details)
       tags(**self.details, **details)
     end
+
+    def make_run_directory
+      [ :mkdir, "-p", config.run_directory ]
+    end
+
+    def audit_line(line, **details)
+      "#{audit_tags(**details).except(:version, :service_version, :service)} #{line}"
+    end
 end

lib/kamal/commands/base.rb

@@ -11,14 +11,7 @@ module Kamal::Commands
     end
 
     def run_over_ssh(*command, host:)
-      "ssh".tap do |cmd|
-        if config.ssh.proxy && config.ssh.proxy.is_a?(Net::SSH::Proxy::Jump)
-          cmd << " -J #{config.ssh.proxy.jump_proxies}"
-        elsif config.ssh.proxy && config.ssh.proxy.is_a?(Net::SSH::Proxy::Command)
-          cmd << " -o ProxyCommand='#{config.ssh.proxy.command_line_template}'"
-        end
-        cmd << " -t #{config.ssh.user}@#{host} -p #{config.ssh.port} '#{command.join(" ").gsub("'", "'\\\\''")}'"
-      end
+      "ssh#{ssh_proxy_args}#{ssh_keys_args} -t #{config.ssh.user}@#{host} -p #{config.ssh.port} '#{command.join(" ").gsub("'", "'\\\\''")}'"
     end
 
     def container_id_for(container_name:, only_running: false)
@@ -41,6 +34,12 @@ module Kamal::Commands
       [ :rm, path ]
     end
 
+    def ensure_docker_installed
+      combine \
+        ensure_local_docker_installed,
+        ensure_local_buildx_installed
+    end
+
     private
       def combine(*commands, by: "&&")
         commands
@@ -69,6 +68,10 @@ module Kamal::Commands
         combine *commands, by: "||"
       end
 
+      def substitute(*commands)
+        "\$\(#{commands.join(" ")}\)"
+      end
+
       def xargs(command)
         [ :xargs, command ].flatten
       end
@@ -92,5 +95,32 @@ module Kamal::Commands
       def tags(**details)
         Kamal::Tags.from_config(config, **details)
       end
+
+      def ssh_proxy_args
+        case config.ssh.proxy
+        when Net::SSH::Proxy::Jump
+          " -J #{config.ssh.proxy.jump_proxies}"
+        when Net::SSH::Proxy::Command
+          " -o ProxyCommand='#{config.ssh.proxy.command_line_template}'"
+        end
+      end
+
+      def ssh_keys_args
+        "#{ ssh_keys.join("") if ssh_keys}" + "#{" -o IdentitiesOnly=yes" if config.ssh&.keys_only}"
+      end
+
+      def ssh_keys
+        config.ssh.keys&.map do |key|
+          " -i #{key}"
+        end
+      end
+
+      def ensure_local_docker_installed
+        docker "--version"
+      end
+
+      def ensure_local_buildx_installed
+        docker :buildx, "version"
+      end
   end
 end

lib/kamal/commands/builder.rb

@@ -1,8 +1,8 @@
 require "active_support/core_ext/string/filters"
 
 class Kamal::Commands::Builder < Kamal::Commands::Base
-  delegate :create, :remove, :push, :clean, :pull, :info, :inspect_builder, :validate_image, :first_mirror, to: :target
-  delegate :local?, :remote?, to: "config.builder"
+  delegate :create, :remove, :dev, :push, :clean, :pull, :info, :inspect_builder, :validate_image, :first_mirror, to: :target
+  delegate :local?, :remote?, :cloud?, to: "config.builder"
 
   include Clone
 
@@ -17,6 +17,8 @@ class Kamal::Commands::Builder < Kamal::Commands::Base
       else
         remote
       end
+    elsif cloud?
+      cloud
     else
       local
     end
@@ -34,23 +36,7 @@ class Kamal::Commands::Builder < Kamal::Commands::Base
     @hybrid ||= Kamal::Commands::Builder::Hybrid.new(config)
   end
 
-
-  def ensure_local_dependencies_installed
-    if name.native?
-      ensure_local_docker_installed
-    else
-      combine \
-        ensure_local_docker_installed,
-        ensure_local_buildx_installed
-    end
+  def cloud
+    @cloud ||= Kamal::Commands::Builder::Cloud.new(config)
   end
-
-  private
-    def ensure_local_docker_installed
-      docker "--version"
-    end
-
-    def ensure_local_buildx_installed
-      docker :buildx, "version"
-    end
 end

lib/kamal/commands/builder/base.rb

@@ -6,20 +6,22 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   delegate :argumentize, to: Kamal::Utils
   delegate \
     :args, :secrets, :dockerfile, :target, :arches, :local_arches, :remote_arches, :remote,
-    :cache_from, :cache_to, :ssh, :driver, :docker_driver?,
+    :cache_from, :cache_to, :ssh, :provenance, :sbom, :driver, :docker_driver?,
     to: :builder_config
 
   def clean
     docker :image, :rm, "--force", config.absolute_image
   end
 
-  def push
+  def push(export_action = "registry", tag_as_dirty: false)
     docker :buildx, :build,
-      "--push",
+      "--output=type=#{export_action}",
       *platform_options(arches),
       *([ "--builder", builder_name ] unless docker_driver?),
+      *build_tag_options(tag_as_dirty: tag_as_dirty),
       *build_options,
-      build_context
+      build_context,
+      "2>&1"
   end
 
   def pull
@@ -37,7 +39,7 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   end
 
   def build_options
-    [ *build_tags, *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile, *build_target, *build_ssh ]
+    [ *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile, *build_target, *build_ssh, *builder_provenance, *builder_sbom ]
   end
 
   def build_context
@@ -58,8 +60,14 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   end
 
   private
-    def build_tags
-      [ "-t", config.absolute_image, "-t", config.latest_image ]
+    def build_tag_names(tag_as_dirty: false)
+      tag_names = [ config.absolute_image, config.latest_image ]
+      tag_names.map! { |t| "#{t}-dirty" } if tag_as_dirty
+      tag_names
+    end
+
+    def build_tag_options(tag_as_dirty: false)
+      build_tag_names(tag_as_dirty: tag_as_dirty).flat_map { |name| [ "-t", name ] }
     end
 
     def build_cache
@@ -97,6 +105,14 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
       argumentize "--ssh", ssh if ssh.present?
     end
 
+    def builder_provenance
+      argumentize "--provenance", provenance unless provenance.nil?
+    end
+
+    def builder_sbom
+      argumentize "--sbom", sbom unless sbom.nil?
+    end
+
     def builder_config
       config.builder
     end

lib/kamal/commands/builder/clone.rb

@@ -1,29 +1,31 @@
 module Kamal::Commands::Builder::Clone
-  extend ActiveSupport::Concern
-
-  included do
-    delegate :clone_directory, :build_directory, to: :"config.builder"
-  end
-
   def clone
-    git :clone, Kamal::Git.root, "--recurse-submodules", path: clone_directory
+    git :clone, escaped_root, "--recurse-submodules", path: config.builder.clone_directory.shellescape
   end
 
   def clone_reset_steps
     [
-      git(:remote, "set-url", :origin, Kamal::Git.root, path: build_directory),
-      git(:fetch, :origin, path: build_directory),
-      git(:reset, "--hard", Kamal::Git.revision, path: build_directory),
-      git(:clean, "-fdx", path: build_directory),
-      git(:submodule, :update, "--init", path: build_directory)
+      git(:remote, "set-url", :origin, escaped_root, path: escaped_build_directory),
+      git(:fetch, :origin, path: escaped_build_directory),
+      git(:reset, "--hard", Kamal::Git.revision, path: escaped_build_directory),
+      git(:clean, "-fdx", path: escaped_build_directory),
+      git(:submodule, :update, "--init", path: escaped_build_directory)
     ]
   end
 
   def clone_status
-    git :status, "--porcelain", path: build_directory
+    git :status, "--porcelain", path: escaped_build_directory
   end
 
   def clone_revision
-    git :"rev-parse", :HEAD, path: build_directory
+    git :"rev-parse", :HEAD, path: escaped_build_directory
+  end
+
+  def escaped_root
+    Kamal::Git.root.shellescape
+  end
+
+  def escaped_build_directory
+    config.builder.build_directory.shellescape
   end
 end

lib/kamal/commands/builder/cloud.rb

@@ -0,0 +1,22 @@
+class Kamal::Commands::Builder::Cloud < Kamal::Commands::Builder::Base
+  # Expects `driver` to be of format "cloud docker-org-name/builder-name"
+
+  def create
+    docker :buildx, :create, "--driver", driver
+  end
+
+  def remove
+    docker :buildx, :rm, builder_name
+  end
+
+  private
+    def builder_name
+      driver.gsub(/[ \/]/, "-")
+    end
+
+    def inspect_buildx
+      pipe \
+        docker(:buildx, :inspect, builder_name),
+        grep("-q", "Endpoint:.*cloud://.*")
+    end
+end

lib/kamal/commands/proxy.rb

@@ -2,14 +2,7 @@ class Kamal::Commands::Proxy < Kamal::Commands::Base
   delegate :argumentize, :optionize, to: Kamal::Utils
 
   def run
-    docker :run,
-      "--name", container_name,
-      "--network", "kamal",
-      "--detach",
-      "--restart", "unless-stopped",
-      "--volume", "kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy",
-      "\$\(#{get_boot_options.join(" ")}\)",
-      config.proxy_image
+    pipe boot_config, xargs(docker_run)
   end
 
   def start
@@ -31,7 +24,7 @@ class Kamal::Commands::Proxy < Kamal::Commands::Base
   def version
     pipe \
       docker(:inspect, container_name, "--format '{{.Config.Image}}'"),
-      [ :cut, "-d:", "-f2" ]
+      [ :awk, "-F:", "'{print \$NF}'" ]
   end
 
   def logs(timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil)
@@ -65,23 +58,70 @@ class Kamal::Commands::Proxy < Kamal::Commands::Base
   end
 
   def ensure_proxy_directory
-    make_directory config.proxy_directory
+    make_directory config.proxy_boot.host_directory
   end
 
   def remove_proxy_directory
-    remove_directory config.proxy_directory
+    remove_directory config.proxy_boot.host_directory
   end
 
-  def get_boot_options
-    combine [ :cat, config.proxy_options_file ], [ :echo, "\"#{config.proxy_options_default.join(" ")}\"" ], by: "||"
+  def ensure_apps_config_directory
+    make_directory config.proxy_boot.apps_directory
+  end
+
+  def boot_config
+    [ :echo, "#{substitute(read_boot_options)} #{substitute(read_image)}:#{substitute(read_image_version)} #{substitute(read_run_command)}" ]
+  end
+
+  def read_boot_options
+    read_file(config.proxy_boot.options_file, default: config.proxy_boot.default_boot_options.join(" "))
+  end
+
+  def read_image
+    read_file(config.proxy_boot.image_file, default: config.proxy_boot.image_default)
+  end
+
+  def read_image_version
+    read_file(config.proxy_boot.image_version_file, default: Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION)
+  end
+
+  def read_run_command
+    read_file(config.proxy_boot.run_command_file)
   end
 
   def reset_boot_options
-    remove_file config.proxy_options_file
+    remove_file config.proxy_boot.options_file
+  end
+
+  def reset_image
+    remove_file config.proxy_boot.image_file
+  end
+
+  def reset_image_version
+    remove_file config.proxy_boot.image_version_file
+  end
+
+  def reset_run_command
+    remove_file config.proxy_boot.run_command_file
   end
 
   private
     def container_name
-      config.proxy_container_name
+      config.proxy_boot.container_name
+    end
+
+    def read_file(file, default: nil)
+      combine [ :cat, file, "2>", "/dev/null" ], [ :echo, "\"#{default}\"" ], by: "||"
+    end
+
+    def docker_run
+      docker \
+        :run,
+        "--name", container_name,
+        "--network", "kamal",
+        "--detach",
+        "--restart", "unless-stopped",
+        "--volume", "kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy",
+        *config.proxy_boot.apps_volume.docker_args
     end
 end

lib/kamal/commands/registry.rb

@@ -1,14 +1,16 @@
 class Kamal::Commands::Registry < Kamal::Commands::Base
-  delegate :registry, to: :config
+  def login(registry_config: nil)
+    registry_config ||= config.registry
 
-  def login
     docker :login,
-      registry.server,
-      "-u", sensitive(Kamal::Utils.escape_shell_value(registry.username)),
-      "-p", sensitive(Kamal::Utils.escape_shell_value(registry.password))
+      registry_config.server,
+      "-u", sensitive(Kamal::Utils.escape_shell_value(registry_config.username)),
+      "-p", sensitive(Kamal::Utils.escape_shell_value(registry_config.password))
   end
 
-  def logout
-    docker :logout, registry.server
+  def logout(registry_config: nil)
+    registry_config ||= config.registry
+
+    docker :logout, registry_config.server
   end
 end

lib/kamal/configuration.rb

@@ -10,16 +10,14 @@ class Kamal::Configuration
   delegate :argumentize, :optionize, to: Kamal::Utils
 
   attr_reader :destination, :raw_config, :secrets
-  attr_reader :accessories, :aliases, :boot, :builder, :env, :logging, :proxy, :servers, :ssh, :sshkit, :registry
+  attr_reader :accessories, :aliases, :boot, :builder, :env, :logging, :proxy, :proxy_boot, :servers, :ssh, :sshkit, :registry
 
   include Validation
 
-  PROXY_MINIMUM_VERSION = "v0.6.0"
-  PROXY_HTTP_PORT = 80
-  PROXY_HTTPS_PORT = 443
-
   class << self
     def create_from(config_file:, destination: nil, version: nil)
+      ENV["KAMAL_DESTINATION"] = destination
+
       raw_config = load_config_files(config_file, *destination_config_file(config_file, destination))
 
       new raw_config, destination: destination, version: version
@@ -34,7 +32,7 @@ class Kamal::Configuration
         if file.exist?
           # Newer Psych doesn't load aliases by default
           load_method = YAML.respond_to?(:unsafe_load) ? :unsafe_load : :load
-          YAML.send(load_method, ERB.new(IO.read(file)).result).symbolize_keys
+          YAML.send(load_method, ERB.new(File.read(file)).result).symbolize_keys
         else
           raise "Configuration file not found in #{file}"
         end
@@ -56,7 +54,7 @@ class Kamal::Configuration
 
     # Eager load config to validate it, these are first as they have dependencies later on
     @servers = Servers.new(config: self)
-    @registry = Registry.new(config: self)
+    @registry = Registry.new(config: @raw_config, secrets: secrets)
 
     @accessories = @raw_config.accessories&.keys&.collect { |name| Accessory.new(name, config: self) } || []
     @aliases = @raw_config.aliases&.keys&.to_h { |name| [ name, Alias.new(name, config: self) ] } || {}
@@ -65,7 +63,8 @@ class Kamal::Configuration
     @env = Env.new(config: @raw_config.env || {}, secrets: secrets)
 
     @logging = Logging.new(logging_config: @raw_config.logging)
-    @proxy = Proxy.new(config: self, proxy_config: @raw_config.proxy || {})
+    @proxy = Proxy.new(config: self, proxy_config: @raw_config.key?(:proxy) ? @raw_config.proxy : {})
+    @proxy_boot = Proxy::Boot.new(config: self)
     @ssh = Ssh.new(config: self)
     @sshkit = Sshkit.new(config: self)
 
@@ -79,7 +78,6 @@ class Kamal::Configuration
     ensure_unique_hosts_for_ssl_roles
   end
 
-
   def version=(version)
     @declared_version = version
   end
@@ -103,6 +101,9 @@ class Kamal::Configuration
     raw_config.minimum_version
   end
 
+  def service_and_destination
+    [ service, destination ].compact.join("-")
+  end
 
   def roles
     servers.roles
@@ -116,11 +117,14 @@ class Kamal::Configuration
     accessories.detect { |a| a.name == name.to_s }
   end
 
-
   def all_hosts
     (roles + accessories).flat_map(&:hosts).uniq
   end
 
+  def app_hosts
+    roles.flat_map(&:hosts).uniq
+  end
+
   def primary_host
     primary_role&.primary_host
   end
@@ -145,8 +149,12 @@ class Kamal::Configuration
     proxy_roles.flat_map(&:name)
   end
 
+  def proxy_accessories
+    accessories.select(&:running_proxy?)
+  end
+
   def proxy_hosts
-    proxy_roles.flat_map(&:hosts).uniq
+    (proxy_roles.flat_map(&:hosts) + proxy_accessories.flat_map(&:hosts)).uniq
   end
 
   def repository
@@ -177,7 +185,6 @@ class Kamal::Configuration
     raw_config.retain_containers || 5
   end
 
-
   def volume_args
     if raw_config.volumes.present?
       argumentize "--volume", raw_config.volumes
@@ -190,7 +197,6 @@ class Kamal::Configuration
     logging.args
   end
 
-
   def readiness_delay
     raw_config.readiness_delay || 7
   end
@@ -203,7 +209,6 @@ class Kamal::Configuration
     raw_config.drain_timeout || 30
   end
 
-
   def run_directory
     ".kamal"
   end
@@ -213,7 +218,7 @@ class Kamal::Configuration
   end
 
   def app_directory
-    File.join apps_directory, [ service, destination ].compact.join("-")
+    File.join apps_directory, service_and_destination
   end
 
   def env_directory
@@ -224,7 +229,6 @@ class Kamal::Configuration
     File.join app_directory, "assets"
   end
 
-
   def hooks_path
     raw_config.hooks_path || ".kamal/hooks"
   end
@@ -233,6 +237,9 @@ class Kamal::Configuration
     raw_config.asset_path
   end
 
+  def error_pages_path
+    raw_config.error_pages_path
+  end
 
   def env_tags
     @env_tags ||= if (tags = raw_config.env["tags"])
@@ -246,31 +253,6 @@ class Kamal::Configuration
     env_tags.detect { |t| t.name == name.to_s }
   end
 
-  def proxy_publish_args(http_port, https_port)
-    argumentize "--publish", [ "#{http_port}:#{PROXY_HTTP_PORT}", "#{https_port}:#{PROXY_HTTPS_PORT}" ]
-  end
-
-  def proxy_options_default
-    proxy_publish_args PROXY_HTTP_PORT, PROXY_HTTPS_PORT
-  end
-
-  def proxy_image
-    "basecamp/kamal-proxy:#{PROXY_MINIMUM_VERSION}"
-  end
-
-  def proxy_container_name
-    "kamal-proxy"
-  end
-
-  def proxy_directory
-    File.join run_directory, "proxy"
-  end
-
-  def proxy_options_file
-    File.join proxy_directory, "options"
-  end
-
-
   def to_h
     {
       roles: role_names,
@@ -300,22 +282,26 @@ class Kamal::Configuration
     end
 
     def ensure_required_keys_present
-      %i[ service image registry servers ].each do |key|
+      %i[ service image registry ].each do |key|
         raise Kamal::ConfigurationError, "Missing required configuration for #{key}" unless raw_config[key].present?
       end
 
-      unless role(primary_role_name).present?
-        raise Kamal::ConfigurationError, "The primary_role #{primary_role_name} isn't defined"
-      end
+      if raw_config.servers.nil?
+        raise Kamal::ConfigurationError, "No servers or accessories specified" unless raw_config.accessories.present?
+      else
+        unless role(primary_role_name).present?
+          raise Kamal::ConfigurationError, "The primary_role #{primary_role_name} isn't defined"
+        end
 
-      if primary_role.hosts.empty?
-        raise Kamal::ConfigurationError, "No servers specified for the #{primary_role.name} primary_role"
-      end
+        if primary_role.hosts.empty?
+          raise Kamal::ConfigurationError, "No servers specified for the #{primary_role.name} primary_role"
+        end
 
-      unless allow_empty_roles?
-        roles.each do |role|
-          if role.hosts.empty?
-            raise Kamal::ConfigurationError, "No servers specified for the #{role.name} role. You can ignore this with allow_empty_roles: true"
+        unless allow_empty_roles?
+          roles.each do |role|
+            if role.hosts.empty?
+              raise Kamal::ConfigurationError, "No servers specified for the #{role.name} role. You can ignore this with allow_empty_roles: true"
+            end
           end
         end
       end
@@ -360,7 +346,7 @@ class Kamal::Configuration
     end
 
     def ensure_unique_hosts_for_ssl_roles
-      hosts = roles.select(&:ssl?).map { |role| role.proxy.host }
+      hosts = roles.select(&:ssl?).flat_map { |role| role.proxy.hosts }
       duplicates = hosts.tally.filter_map { |host, count| host if count > 1 }
 
       raise Kamal::ConfigurationError, "Different roles can't share the same host for SSL: #{duplicates.join(", ")}" if duplicates.any?

lib/kamal/configuration/accessory.rb

@@ -1,9 +1,11 @@
 class Kamal::Configuration::Accessory
   include Kamal::Configuration::Validation
 
+  DEFAULT_NETWORK = "kamal"
+
   delegate :argumentize, :optionize, to: Kamal::Utils
 
-  attr_reader :name, :accessory_config, :env
+  attr_reader :name, :env, :proxy, :registry
 
   def initialize(name, config:)
     @name, @config, @accessory_config = name.inquiry, config, config.raw_config["accessories"][name]
@@ -14,10 +16,11 @@ class Kamal::Configuration::Accessory
       context: "accessories/#{name}",
       with: Kamal::Configuration::Validator::Accessory
 
-    @env = Kamal::Configuration::Env.new \
-      config: accessory_config.fetch("env", {}),
-      secrets: config.secrets,
-      context: "accessories/#{name}/env"
+    ensure_valid_roles
+
+    @env = initialize_env
+    @proxy = initialize_proxy if running_proxy?
+    @registry = initialize_registry if accessory_config["registry"].present?
   end
 
   def service_name
@@ -25,11 +28,11 @@ class Kamal::Configuration::Accessory
   end
 
   def image
-    accessory_config["image"]
+    [ registry&.server, accessory_config["image"] ].compact.join("/")
   end
 
   def hosts
-    hosts_from_host || hosts_from_hosts || hosts_from_roles
+    hosts_from_host || hosts_from_hosts || hosts_from_roles || hosts_from_tags
   end
 
   def port
@@ -38,6 +41,10 @@ class Kamal::Configuration::Accessory
     end
   end
 
+  def network_args
+    argumentize "--network", network
+  end
+
   def publish_args
     argumentize "--publish", port if port
   end
@@ -100,8 +107,33 @@ class Kamal::Configuration::Accessory
     accessory_config["cmd"]
   end
 
+  def running_proxy?
+    accessory_config["proxy"].present?
+  end
+
   private
-    attr_accessor :config
+    attr_reader :config, :accessory_config
+
+    def initialize_env
+      Kamal::Configuration::Env.new \
+        config: accessory_config.fetch("env", {}),
+        secrets: config.secrets,
+        context: "accessories/#{name}/env"
+    end
+
+    def initialize_proxy
+      Kamal::Configuration::Proxy.new \
+        config: config,
+        proxy_config: accessory_config["proxy"],
+        context: "accessories/#{name}/proxy"
+    end
+
+    def initialize_registry
+      Kamal::Configuration::Registry.new \
+        config: accessory_config,
+        secrets: config.secrets,
+        context: "accessories/#{name}/registry"
+    end
 
     def default_labels
       { "service" => service_name }
@@ -123,7 +155,7 @@ class Kamal::Configuration::Accessory
     end
 
     def read_dynamic_file(local_file)
-      StringIO.new(ERB.new(IO.read(local_file)).result)
+      StringIO.new(ERB.new(File.read(local_file)).result)
     end
 
     def expand_remote_file(remote_file)
@@ -169,8 +201,40 @@ class Kamal::Configuration::Accessory
     end
 
     def hosts_from_roles
-      if accessory_config.key?("roles")
-        accessory_config["roles"].flat_map { |role| config.role(role).hosts }
+      if accessory_config.key?("role")
+       config.role(accessory_config["role"])&.hosts
+      elsif accessory_config.key?("roles")
+        accessory_config["roles"].flat_map { |role| config.role(role)&.hosts }
+      end
+    end
+
+    def hosts_from_tags
+      if accessory_config.key?("tag")
+        extract_hosts_from_config_with_tag(accessory_config["tag"])
+      elsif accessory_config.key?("tags")
+        accessory_config["tags"].flat_map { |tag| extract_hosts_from_config_with_tag(tag) }
+      end
+    end
+
+    def extract_hosts_from_config_with_tag(tag)
+      if (servers_with_roles = config.raw_config.servers).is_a?(Hash)
+        servers_with_roles.flat_map do |role, servers_in_role|
+          servers_in_role.filter_map do |host|
+            host.keys.first if host.is_a?(Hash) && host.values.first.include?(tag)
+          end
+        end
+      end
+    end
+
+    def network
+      accessory_config["network"] || DEFAULT_NETWORK
+    end
+
+    def ensure_valid_roles
+      if accessory_config["roles"] && (missing_roles = accessory_config["roles"] - config.roles.map(&:name)).any?
+        raise Kamal::ConfigurationError, "accessories/#{name}: unknown roles #{missing_roles.join(", ")}"
+      elsif accessory_config["role"] && !config.role(accessory_config["role"])
+        raise Kamal::ConfigurationError, "accessories/#{name}: unknown role #{accessory_config["role"]}"
       end
     end
 end

lib/kamal/configuration/builder.rb

@@ -53,6 +53,10 @@ class Kamal::Configuration::Builder
     !local_disabled? && (arches.empty? || local_arches.any?)
   end
 
+  def cloud?
+    driver.start_with? "cloud"
+  end
+
   def cached?
     !!builder_config["cache"]
   end
@@ -111,6 +115,14 @@ class Kamal::Configuration::Builder
     builder_config["ssh"]
   end
 
+  def provenance
+    builder_config["provenance"]
+  end
+
+  def sbom
+    builder_config["sbom"]
+  end
+
   def git_clone?
     Kamal::Git.used? && builder_config["context"].nil?
   end
@@ -166,7 +178,7 @@ class Kamal::Configuration::Builder
     end
 
     def cache_to_config_for_registry
-      [ "type=registry", builder_config["cache"]&.fetch("options", nil), "ref=#{cache_image_ref}" ].compact.join(",")
+      [ "type=registry", "ref=#{cache_image_ref}", builder_config["cache"]&.fetch("options", nil) ].compact.join(",")
     end
 
     def repo_basename

lib/kamal/configuration/docs/accessory.yml

@@ -3,48 +3,71 @@
 # Accessories can be booted on a single host, a list of hosts, or on specific roles.
 # The hosts do not need to be defined in the Kamal servers configuration.
 #
-# Accessories are managed separately from the main service - they are not updated
-# when you deploy and they do not have zero-downtime deployments.
+# Accessories are managed separately from the main service — they are not updated
+# when you deploy, and they do not have zero-downtime deployments.
 #
 # Run `kamal accessory boot <accessory>` to boot an accessory.
 # See `kamal accessory --help` for more information.
 
 # Configuring accessories
 #
-# First define the accessory in the `accessories`
+# First, define the accessory in the `accessories`:
 accessories:
   mysql:
 
     # Service name
     #
-    # This is used in the service label and defaults to `<service>-<accessory>`
-    # where `<service>` is the main service name from the root configuration
+    # This is used in the service label and defaults to `<service>-<accessory>`,
+    # where `<service>` is the main service name from the root configuration:
     service: mysql
 
     # Image
     #
-    # The Docker image to use, prefix with a registry if not using Docker hub
+    # The Docker image to use.
+    # Prefix it with its server when using root level registry different from Docker Hub.
+    # Define registry directly or via anchors when it differs from root level registry.
     image: mysql:8.0
 
+    # Registry
+    #
+    # By default accessories use Docker Hub registry.
+    # You can specify different registry per accessory with this option.
+    # Don't prefix image with this registry server.
+    # Use anchors if you need to set the same specific registry for several accessories.
+    #
+    # ```yml
+    # registry:
+    #   <<: *specific-registry
+    # ```
+    #
+    # See kamal docs registry for more information:
+    registry:
+      ...
+
     # Accessory hosts
     #
-    # Specify one  of `host`, `hosts` or `roles`
+    # Specify one of `host`, `hosts`, `role`, `roles`, `tag` or `tags`:
     host: mysql-db1
     hosts:
       - mysql-db1
       - mysql-db2
+    role: mysql
     roles:
       - mysql
+    tag: writer
+    tags:
+      - writer
+      - reader
 
     # Custom command
     #
-    # You can set a custom command to run in the container, if you do not want to use the default
+    # You can set a custom command to run in the container if you do not want to use the default:
     cmd: "bin/mysqld"
 
     # Port mappings
     #
-    # See https://docs.docker.com/network/, especially note the warning about the security
-    # implications of exposing ports publicly.
+    # See [https://docs.docker.com/network/](https://docs.docker.com/network/), and
+    # especially note the warning about the security implications of exposing ports publicly.
     port: "127.0.0.1:3306:3306"
 
     # Labels
@@ -52,20 +75,22 @@ accessories:
       app: myapp
 
     # Options
-    # These are passed to the Docker run command in the form `--<name> <value>`
+    #
+    # These are passed to the Docker run command in the form `--<name> <value>`:
     options:
       restart: always
       cpus: 2
 
     # Environment variables
-    # See kamal docs env for more information
+    #
+    # See kamal docs env for more information:
     env:
       ...
 
     # Copying files
     #
     # You can specify files to mount into the container.
-    # The format is `local:remote` where `local` is the path to the file on the local machine
+    # The format is `local:remote`, where `local` is the path to the file on the local machine
     # and `remote` is the path to the file in the container.
     #
     # They will be uploaded from the local repo to the host and then mounted.
@@ -78,13 +103,26 @@ accessories:
     # Directories
     #
     # You can specify directories to mount into the container. They will be created on the host
-    # before being mounted
+    # before being mounted:
     directories:
       - mysql-logs:/var/log/mysql
 
     # Volumes
     #
     # Any other volumes to mount, in addition to the files and directories.
-    # They are not created or copied before mounting
+    # They are not created or copied before mounting:
     volumes:
       - /path/to/mysql-logs:/var/log/mysql
+
+    # Network
+    #
+    # The network the accessory will be attached to.
+    #
+    # Defaults to kamal:
+    network: custom
+
+    # Proxy
+    #
+    # You can run your accessory behind the Kamal proxy. See kamal docs proxy for more information
+    proxy:
+      ...

lib/kamal/configuration/docs/alias.yml

@@ -5,22 +5,22 @@
 # For example, for a Rails app, you might open a console with:
 #
 # ```shell
-# kamal app exec -i -r console "rails console"
+# kamal app exec -i --reuse "bin/rails console"
 # ```
 #
 # By defining an alias, like this:
 aliases:
-  console: app exec -r console -i "rails console"
+  console: app exec -i --reuse "bin/rails console"
 # You can now open the console with:
+#
 # ```shell
 # kamal console
 # ```
 
 # Configuring aliases
 #
-# Aliases are defined in the root config under the alias key
+# Aliases are defined in the root config under the alias key.
 #
-# Each alias is named and can only contain lowercase letters, numbers, dashes and underscores.
-
+# Each alias is named and can only contain lowercase letters, numbers, dashes, and underscores:
 aliases:
   uname: app exec -p -q -r web "uname -a"

lib/kamal/configuration/docs/boot.yml

@@ -2,18 +2,18 @@
 #
 # When deploying to large numbers of hosts, you might prefer not to restart your services on every host at the same time.
 #
-# Kamal’s default is to boot new containers on all hosts in parallel. But you can control this with the boot configuration.
+# Kamal’s default is to boot new containers on all hosts in parallel. However, you can control this with the boot configuration.
 
 # Fixed group sizes
 #
-# Here we boot 2 hosts at a time with a 10 second gap between each group.
+# Here, we boot 2 hosts at a time with a 10-second gap between each group:
 boot:
   limit: 2
   wait: 10
 
 # Percentage of hosts
 #
-# Here we boot 25% of the hosts at a time with a 2 second gap between each group.
+# Here, we boot 25% of the hosts at a time with a 2-second gap between each group:
 boot:
   limit: 25%
   wait: 2

lib/kamal/configuration/docs/builder.yml

@@ -1,8 +1,8 @@
 # Builder
 #
-# The builder configuration controls how the application is built with `docker build`
+# The builder configuration controls how the application is built with `docker build`.
 #
-# See https://kamal-deploy.org/docs/configuration/builder-examples/ for more information
+# See https://kamal-deploy.org/docs/configuration/builder-examples/ for more information.
 
 # Builder options
 #
@@ -11,15 +11,15 @@ builder:
 
   # Arch
   #
-  # The architectures to build for - you can set an array or just a single value.
+  # The architectures to build for — you can set an array or just a single value.
   #
-  # Allowed values are `amd64` and `arm64`
+  # Allowed values are `amd64` and `arm64`:
   arch:
     - amd64
 
   # Remote
   #
-  # The connection string for a remote builder. If supplied Kamal will use this
+  # The connection string for a remote builder. If supplied, Kamal will use this
   # for builds that do not match the local architecture of the deployment host.
   remote: ssh://docker@docker-builder
 
@@ -28,14 +28,14 @@ builder:
   # If set to false, Kamal will always use the remote builder even when building
   # the local architecture.
   #
-  # Defaults to true
+  # Defaults to true:
   local: true
 
   # Builder cache
   #
-  # The type must be either 'gha' or 'registry'
+  # The type must be either 'gha' or 'registry'.
   #
-  # The image is only used for registry cache. Not compatible with the docker driver
+  # The image is only used for registry cache and is not compatible with the Docker driver:
   cache:
     type: registry
     options: mode=max
@@ -43,25 +43,25 @@ builder:
 
   # Build context
   #
-  # If this is not set, then a local git clone of the repo is used.
+  # If this is not set, then a local Git clone of the repo is used.
   # This ensures a clean build with no uncommitted changes.
   #
-  # To use the local checkout instead you can set the context to `.`, or a path to another directory.
+  # To use the local checkout instead, you can set the context to `.`, or a path to another directory.
   context: .
 
   # Dockerfile
   #
-  # The Dockerfile to use for building, defaults to `Dockerfile`
+  # The Dockerfile to use for building, defaults to `Dockerfile`:
   dockerfile: Dockerfile.production
 
   # Build target
   #
-  # If not set, then the default target is used
+  # If not set, then the default target is used:
   target: production
 
-  # Build Arguments
+  # Build arguments
   #
-  # Any additional build arguments, passed to `docker build` with `--build-arg <key>=<value>`
+  # Any additional build arguments, passed to `docker build` with `--build-arg <key>=<value>`:
   args:
     ENVIRONMENT: production
 
@@ -74,33 +74,46 @@ builder:
 
   # Build secrets
   #
-  # Values are read from .kamal/secrets.
-  #
+  # Values are read from `.kamal/secrets`:
   secrets:
     - SECRET1
     - SECRET2
 
-  # Referencing Build Secrets
+  # Referencing build secrets
   #
   # ```shell
   # # Copy Gemfiles
   # COPY Gemfile Gemfile.lock ./
   #
   # # Install dependencies, including private repositories via access token
-  # # Then remove bundle cache with exposed GITHUB_TOKEN)
+  # # Then remove bundle cache with exposed GITHUB_TOKEN
   # RUN --mount=type=secret,id=GITHUB_TOKEN \
   #   BUNDLE_GITHUB__COM=x-access-token:$(cat /run/secrets/GITHUB_TOKEN) \
   #   bundle install && \
   #   rm -rf /usr/local/bundle/cache
   # ```
 
-
   # SSH
   #
-  # SSH agent socket or keys to expose to the build
+  # SSH agent socket or keys to expose to the build:
   ssh: default=$SSH_AUTH_SOCK
 
   # Driver
   #
-  # The build driver to use, defaults to `docker-container`
+  # The build driver to use, defaults to `docker-container`:
   driver: docker
+  #
+  # If you want to use Docker Build Cloud (https://www.docker.com/products/build-cloud/), you can set the driver to:
+  driver: cloud org-name/builder-name
+
+  # Provenance
+  #
+  # It is used to configure provenance attestations for the build result.
+  # The value can also be a boolean to enable or disable provenance attestations.
+  provenance: mode=max
+
+  # SBOM (Software Bill of Materials)
+  #
+  # It is used to configure SBOM generation for the build result.
+  # The value can also be a boolean to enable or disable SBOM generation.
+  sbom: true

lib/kamal/configuration/docs/configuration.yml

@@ -1,14 +1,13 @@
 # Kamal Configuration
 #
-# Configuration is read from the `config/deploy.yml`
-#
+# Configuration is read from the `config/deploy.yml`.
 
 # Destinations
 #
 # When running commands, you can specify a destination with the `-d` flag,
-# e.g. `kamal deploy -d staging`
+# e.g., `kamal deploy -d staging`.
 #
-# In this case the configuration will also be read from `config/deploy.staging.yml`
+# In this case, the configuration will also be read from `config/deploy.staging.yml`
 # and merged with the base configuration.
 
 # Extensions
@@ -18,10 +17,11 @@
 # However, you might want to declare a configuration block using YAML anchors
 # and aliases to avoid repetition.
 #
-# You can use prefix a configuration section with `x-` to indicate that it is an
+# You can prefix a configuration section with `x-` to indicate that it is an
 # extension. Kamal will ignore the extension and not raise an error.
 
 # The service name
+#
 # This is a required value. It is used as the container name prefix.
 service: myapp
 
@@ -32,147 +32,153 @@ image: my-image
 
 # Labels
 #
-# Additional labels to add to the container
+# Additional labels to add to the container:
 labels:
   my-label: my-value
 
 # Volumes
 #
-# Additional volumes to mount into the container
+# Additional volumes to mount into the container:
 volumes:
   - /path/on/host:/path/in/container:ro
 
 # Registry
 #
-# The Docker registry configuration, see kamal docs registry
+# The Docker registry configuration, see kamal docs registry:
 registry:
   ...
 
 # Servers
 #
-# The servers to deploy to, optionally with custom roles, see kamal docs servers
+# The servers to deploy to, optionally with custom roles, see kamal docs servers:
 servers:
   ...
 
 # Environment variables
 #
-# See kamal docs env
+# See kamal docs env:
 env:
   ...
 
-# Asset Path
+# Asset path
 #
-# Used for asset bridging across deployments, default to `nil`
+# Used for asset bridging across deployments, default to `nil`.
 #
 # If there are changes to CSS or JS files, we may get requests
-# for the old versions on the new container and vice-versa.
+# for the old versions on the new container, and vice versa.
 #
-# To avoid 404s we can specify an asset path.
+# To avoid 404s, we can specify an asset path.
 # Kamal will replace that path in the container with a mapped
 # volume containing both sets of files.
 # This requires that file names change when the contents change
-# (e.g. by including a hash of the contents in the name).
+# (e.g., by including a hash of the contents in the name).
 #
 # To configure this, set the path to the assets:
 asset_path: /path/to/assets
 
 # Hooks path
 #
-# Path to hooks, defaults to `.kamal/hooks`
-# See https://kamal-deploy.org/docs/hooks for more information
+# Path to hooks, defaults to `.kamal/hooks`.
+# See https://kamal-deploy.org/docs/hooks for more information:
 hooks_path: /user_home/kamal/hooks
 
+# Error pages
+#
+# A directory relative to the app root to find error pages for the proxy to serve.
+# Any files in the format 4xx.html or 5xx.html will be copied to the hosts.
+error_pages_path: public
+
 # Require destinations
 #
-# Whether deployments require a destination to be specified, defaults to `false`
+# Whether deployments require a destination to be specified, defaults to `false`:
 require_destination: true
 
 # Primary role
 #
-# This defaults to `web`, but if you have no web role, you can change this
+# This defaults to `web`, but if you have no web role, you can change this:
 primary_role: workers
 
 # Allowing empty roles
 #
-# Whether roles with no servers are allowed. Defaults to `false`.
+# Whether roles with no servers are allowed. Defaults to `false`:
 allow_empty_roles: false
 
 # Retain containers
 #
-# How many old containers and images we retain, defaults to 5
+# How many old containers and images we retain, defaults to 5:
 retain_containers: 3
 
 # Minimum version
 #
-# The minimum version of Kamal required to deploy this configuration, defaults to nil
+# The minimum version of Kamal required to deploy this configuration, defaults to `nil`:
 minimum_version: 1.3.0
 
 # Readiness delay
 #
-# Seconds to wait for a container to boot after is running, default 7
+# Seconds to wait for a container to boot after it is running, default 7.
 #
-# This only applies to containers that do not run a proxy or specify a healthcheck
+# This only applies to containers that do not run a proxy or specify a healthcheck:
 readiness_delay: 4
 
 # Deploy timeout
 #
-# How long to wait for a container to become ready, default 30
+# How long to wait for a container to become ready, default 30:
 deploy_timeout: 10
 
 # Drain timeout
 #
-# How long to wait for a containers to drain, default 30
+# How long to wait for a container to drain, default 30:
 drain_timeout: 10
 
 # Run directory
 #
-# Directory to store kamal runtime files in on the host, default `.kamal`
+# Directory to store kamal runtime files in on the host, default `.kamal`:
 run_directory: /etc/kamal
 
 # SSH options
 #
-# See kamal docs ssh
+# See kamal docs ssh:
 ssh:
   ...
 
 # Builder options
 #
-# See kamal docs builder
+# See kamal docs builder:
 builder:
   ...
 
 # Accessories
 #
-# Additionals services to run in Docker, see kamal docs accessory
+# Additional services to run in Docker, see kamal docs accessory:
 accessories:
   ...
 
 # Proxy
 #
-# Configuration for kamal-proxy, see kamal docs proxy
+# Configuration for kamal-proxy, see kamal docs proxy:
 proxy:
   ...
 
 # SSHKit
 #
-# See kamal docs sshkit
+# See kamal docs sshkit:
 sshkit:
   ...
 
 # Boot options
 #
-# See kamal docs boot
+# See kamal docs boot:
 boot:
   ...
 
 # Logging
 #
-# Docker logging configuration, see kamal docs logging
+# Docker logging configuration, see kamal docs logging:
 logging:
   ...
 
 # Aliases
 #
-# Alias configuration, see kamal docs alias
+# Alias configuration, see kamal docs alias:
 aliases:
   ...

lib/kamal/configuration/docs/env.yml

@@ -1,13 +1,13 @@
 # Environment variables
 #
 # Environment variables can be set directly in the Kamal configuration or
-# read from .kamal/secrets.
+# read from `.kamal/secrets`.
 
 # Reading environment variables from the configuration
 #
 # Environment variables can be set directly in the configuration file.
 #
-# These are passed to the docker run command when deploying.
+# These are passed to the `docker run` command when deploying.
 env:
   DATABASE_HOST: mysql-db1
   DATABASE_PORT: 3306
@@ -16,7 +16,7 @@ env:
 #
 # Kamal uses dotenv to automatically load environment variables set in the `.kamal/secrets` file.
 #
-# If you are using destinations, secrets will instead be read from `.kamal/secrets-<DESTINATION>` if
+# If you are using destinations, secrets will instead be read from `.kamal/secrets.<DESTINATION>` if
 # it exists.
 #
 # Common secrets across all destinations can be set in `.kamal/secrets-common`.
@@ -24,38 +24,70 @@ env:
 # This file can be used to set variables like `KAMAL_REGISTRY_PASSWORD` or database passwords.
 # You can use variable or command substitution in the secrets file.
 #
-# ```
+# ```shell
 # KAMAL_REGISTRY_PASSWORD=$KAMAL_REGISTRY_PASSWORD
 # RAILS_MASTER_KEY=$(cat config/master.key)
 # ```
 #
-# You can also use [secret helpers](../commands/secrets) for some common password managers.
-# ```
+# You can also use [secret helpers](../../commands/secrets) for some common password managers.
+#
+# ```shell
 # SECRETS=$(kamal secrets fetch ...)
 #
 # REGISTRY_PASSWORD=$(kamal secrets extract REGISTRY_PASSWORD $SECRETS)
 # DB_PASSWORD=$(kamal secrets extract DB_PASSWORD $SECRETS)
 # ```
 #
-# If you store secrets directly in .kamal/secrets, ensure that it is not checked into version control.
+# If you store secrets directly in `.kamal/secrets`, ensure that it is not checked into version control.
 #
-# To pass the secrets you should list them under the `secret` key. When you do this the
+# To pass the secrets, you should list them under the `secret` key. When you do this, the
 # other variables need to be moved under the `clear` key.
 #
-# Unlike clear values, secrets are not passed directly to the container,
-# but are stored in an env file on the host
+# Unlike clear values, secrets are not passed directly to the container
+# but are stored in an env file on the host:
 env:
   clear:
     DB_USER: app
   secret:
     - DB_PASSWORD
 
+# Aliased secrets
+#
+# You can also alias secrets to other secrets using a `:` separator.
+#
+# This is useful when the ENV name is different from the secret name. For example, if you have two
+# places where you need to define the ENV variable `DB_PASSWORD`, but the value is different depending
+# on the context.
+#
+# ```shell
+# SECRETS=$(kamal secrets fetch ...)
+#
+# MAIN_DB_PASSWORD=$(kamal secrets extract MAIN_DB_PASSWORD $SECRETS)
+# SECONDARY_DB_PASSWORD=$(kamal secrets extract SECONDARY_DB_PASSWORD $SECRETS)
+# ```
+env:
+  secret:
+    - DB_PASSWORD:MAIN_DB_PASSWORD
+  tags:
+    secondary_db:
+      secret:
+        - DB_PASSWORD:SECONDARY_DB_PASSWORD
+accessories:
+  main_db_accessory:
+    env:
+      secret:
+        - DB_PASSWORD:MAIN_DB_PASSWORD
+  secondary_db_accessory:
+    env:
+      secret:
+        - DB_PASSWORD:SECONDARY_DB_PASSWORD
+
 # Tags
 #
 # Tags are used to add extra env variables to specific hosts.
 # See kamal docs servers for how to tag hosts.
 #
-# Tags are only allowed in the top level env configuration (i.e not under a role specific env).
+# Tags are only allowed in the top-level env configuration (i.e., not under a role-specific env).
 #
 # The env variables can be specified with secret and clear values as explained above.
 env:

lib/kamal/configuration/docs/logging.yml

@@ -6,16 +6,16 @@
 #
 # These go under the logging key in the configuration file.
 #
-# This can be specified in the root level or for a specific role.
+# This can be specified at the root level or for a specific role.
 logging:
 
   # Driver
   #
-  # The logging driver to use, passed to Docker via `--log-driver`
+  # The logging driver to use, passed to Docker via `--log-driver`:
   driver: json-file
 
   # Options
   #
-  # Any logging options to pass to the driver, passed to Docker via `--log-opt`
+  # Any logging options to pass to the driver, passed to Docker via `--log-opt`:
   options:
     max-size: 100m

lib/kamal/configuration/docs/proxy.yml

@@ -5,54 +5,79 @@
 # application container.
 #
 # The proxy is configured in the root configuration under `proxy`. These are
-# options that are set when deploying the application, not when booting the proxy
+# options that are set when deploying the application, not when booting the proxy.
 #
-# They are application specific, so are not shared when multiple applications
+# They are application-specific, so they are not shared when multiple applications
 # run on the same proxy.
 #
-# The proxy is enabled by default on the primary role, but can be disabled by
+# The proxy is enabled by default on the primary role but can be disabled by
 # setting `proxy: false`.
 #
-# It is disabled by default on all other roles, but can be enabled by setting
-# `proxy: true`, or providing a proxy configuration.
+# It is disabled by default on all other roles but can be enabled by setting
+# `proxy: true` or providing a proxy configuration.
 proxy:
 
-  # Host
+  # Hosts
   #
   # The hosts that will be used to serve the app. The proxy will only route requests
   # to this host to your app.
   #
   # If no hosts are set, then all requests will be forwarded, except for matching
   # requests for other apps deployed on that server that do have a host set.
+  #
+  # Specify one of `host` or `hosts`.
   host: foo.example.com
+  hosts:
+    - foo.example.com
+    - bar.example.com
 
   # App port
   #
-  # The port the application container is exposed on
+  # The port the application container is exposed on.
   #
-  # Defaults to 80
+  # Defaults to 80:
   app_port: 3000
 
   # SSL
   #
   # kamal-proxy can provide automatic HTTPS for your application via Let's Encrypt.
   #
-  # This requires that we are deploying to a one server and the host option is set.
-  # The host value must point to the server we are deploying to and port 443 must be
+  # This requires that we are deploying to one server and the host option is set.
+  # The host value must point to the server we are deploying to, and port 443 must be
   # open for the Let's Encrypt challenge to succeed.
   #
-  # Defaults to false
+  # If you set `ssl` to `true`, `kamal-proxy` will stop forwarding headers to your app,
+  # unless you explicitly set `forward_headers: true`
+  #
+  # Defaults to `false`:
   ssl: true
 
+  # SSL redirect
+  #
+  # By default, kamal-proxy will redirect all HTTP requests to HTTPS when SSL is enabled.
+  # If you prefer that HTTP traffic is passed through to your application (along with
+  # HTTPS traffic), you can disable this redirect by setting `ssl_redirect: false`:
+  ssl_redirect: false
+
+  # Forward headers
+  #
+  # Whether to forward the `X-Forwarded-For` and `X-Forwarded-Proto` headers.
+  #
+  # If you are behind a trusted proxy, you can set this to `true` to forward the headers.
+  #
+  # By default, kamal-proxy will not forward the headers if the `ssl` option is set to `true`, and
+  # will forward them if it is set to `false`.
+  forward_headers: true
+
   # Response timeout
   #
-  # How long to wait for requests to complete before timing out, defaults to 30 seconds
+  # How long to wait for requests to complete before timing out, defaults to 30 seconds:
   response_timeout: 10
 
   # Healthcheck
   #
-  # When deploying, the proxy will by default hit /up once every second until we hit
-  # the deploy timeout, with a 5 second timeout for each request.
+  # When deploying, the proxy will by default hit `/up` once every second until we hit
+  # the deploy timeout, with a 5-second timeout for each request.
   #
   # Once the app is up, the proxy will stop hitting the healthcheck endpoint.
   healthcheck:
@@ -62,12 +87,12 @@ proxy:
 
   # Buffering
   #
-  # Whether to buffer request and response bodies in the proxy
+  # Whether to buffer request and response bodies in the proxy.
   #
-  # By default buffering is enabled with a max request body size of 1GB and no limit
+  # By default, buffering is enabled with a max request body size of 1GB and no limit
   # for response size.
   #
-  # You can also set the memory limit for buffering, which defaults to 1MB, anything
+  # You can also set the memory limit for buffering, which defaults to 1MB; anything
   # larger than that is written to disk.
   buffering:
     requests: true
@@ -78,9 +103,9 @@ proxy:
 
   # Logging
   #
-  # Configure request logging for the proxy
+  # Configure request logging for the proxy.
   # You can specify request and response headers to log.
-  # By default, Cache-Control, Last-Modified and User-Agent request headers are logged
+  # By default, `Cache-Control`, `Last-Modified`, and `User-Agent` request headers are logged:
   logging:
     request_headers:
       - Cache-Control
@@ -88,13 +113,3 @@ proxy:
     response_headers:
       - X-Request-ID
       - X-Request-Start
-
-  # Forward headers
-  #
-  # Whether to forward the X-Forwarded-For and X-Forwarded-Proto headers.
-  #
-  # If you are behind a trusted proxy, you can set this to true to forward the headers.
-  #
-  # By default kamal-proxy will not forward the headers the ssl option is set to true, and
-  # will forward them if it is set to false.
-  forward_headers: true

lib/kamal/configuration/docs/registry.yml

@@ -1,10 +1,13 @@
 # Registry
 #
-# The default registry is Docker Hub, but you can change it using registry/server:
+# The default registry is Docker Hub, but you can change it using `registry/server`.
 #
-# A reference to secret (in this case DOCKER_REGISTRY_TOKEN) will look up the secret
-# in the local environment.
-
+# By default, Docker Hub creates public repositories. To avoid making your images public,
+# set up a private repository before deploying, or change the default repository privacy
+# settings to private in your [Docker Hub settings](https://hub.docker.com/repository-settings/default-privacy).
+#
+# A reference to a secret (in this case, `DOCKER_REGISTRY_TOKEN`) will look up the secret
+# in the local environment:
 registry:
   server: registry.digitalocean.com
   username:
@@ -13,30 +16,31 @@ registry:
     - DOCKER_REGISTRY_TOKEN
 
 # Using AWS ECR as the container registry
-# You will need to have the aws CLI installed locally for this to work.
-# AWS ECR’s access token is only valid for 12hrs. In order to not have to manually regenerate the token every time, you can use ERB in the deploy.yml file to shell out to the aws cli command, and obtain the token:
-
+#
+# You will need to have the AWS CLI installed locally for this to work.
+# AWS ECR’s access token is only valid for 12 hours. In order to avoid having to manually regenerate the token every time, you can use ERB in the `deploy.yml` file to shell out to the AWS CLI command and obtain the token:
 registry:
   server: <your aws account id>.dkr.ecr.<your aws region id>.amazonaws.com
   username: AWS
   password: <%= %x(aws ecr get-login-password) %>
 
 # Using GCP Artifact Registry as the container registry
-# To sign into Artifact Registry, you would need to
+#
+# To sign into Artifact Registry, you need to
 # [create a service account](https://cloud.google.com/iam/docs/service-accounts-create#creating)
 # and [set up roles and permissions](https://cloud.google.com/artifact-registry/docs/access-control#permissions).
-# Normally, assigning a roles/artifactregistry.writer role should be sufficient.
+# Normally, assigning the `roles/artifactregistry.writer` role should be sufficient.
 #
 # Once the service account is ready, you need to generate and download a JSON key and base64 encode it:
 #
 # ```shell
-# base64 -i /path/to/key.json | tr -d "\\n")
+# base64 -i /path/to/key.json | tr -d "\\n"
 # ```
-# You'll then need to set the KAMAL_REGISTRY_PASSWORD secret to that value.
 #
-# Use the env variable as password along with _json_key_base64 as username.
+# You'll then need to set the `KAMAL_REGISTRY_PASSWORD` secret to that value.
+#
+# Use the environment variable as the password along with `_json_key_base64` as the username.
 # Here’s the final configuration:
-
 registry:
   server: <your registry region>-docker.pkg.dev
   username: _json_key_base64
@@ -46,6 +50,7 @@ registry:
 # Validating the configuration
 #
 # You can validate the configuration by running:
+#
 # ```shell
 # kamal registry login
 # ```

lib/kamal/configuration/docs/role.yml

@@ -1,22 +1,21 @@
 # Roles
 #
 # Roles are used to configure different types of servers in the deployment.
-# The most common use for this is to run a web servers and job servers.
+# The most common use for this is to run web servers and job servers.
 #
 # Kamal expects there to be a `web` role, unless you set a different `primary_role`
 # in the root configuration.
 
 # Role configuration
 #
-# Roles are specified under the servers key
+# Roles are specified under the servers key:
 servers:
 
   # Simple role configuration
   #
+  # This can be a list of hosts if you don't need custom configuration for the role.
   #
-  # This can be a list of hosts, if you don't need custom configuration for the role.
-  #
-  # You can set tags on the hosts for custom env variables (see kamal docs env)
+  # You can set tags on the hosts for custom env variables (see kamal docs env):
   web:
     - 172.1.0.1
     - 172.1.0.2: experiment1
@@ -24,16 +23,16 @@ servers:
 
   # Custom role configuration
   #
-  # When there are other options to set, the list of hosts goes under the `hosts` key
+  # When there are other options to set, the list of hosts goes under the `hosts` key.
   #
-  # By default only the primary role uses a proxy.
+  # By default, only the primary role uses a proxy.
   #
-  # For other roles, you can set it to `proxy: true` enable it and inherit the root proxy
+  # For other roles, you can set it to `proxy: true` to enable it and inherit the root proxy
   # configuration or provide a map of options to override the root configuration.
   #
   # For the primary role, you can set `proxy: false` to disable the proxy.
   #
-  # You can also set a custom cmd to run in the container, and overwrite other settings
+  # You can also set a custom `cmd` to run in the container and overwrite other settings
   # from the root configuration.
   workers:
     hosts:

lib/kamal/configuration/docs/servers.yml

@@ -2,7 +2,7 @@
 #
 # Servers are split into different roles, with each role having its own configuration.
 #
-# For simpler deployments though where all servers are identical, you can just specify a list of servers
+# For simpler deployments, though, where all servers are identical, you can just specify a list of servers.
 # They will be implicitly assigned to the `web` role.
 servers:
   - 172.0.0.1
@@ -19,7 +19,7 @@ servers:
 
 # Roles
 #
-# For more complex deployments (e.g. if you are running job hosts), you can specify roles, and configure each separately (see kamal docs role)
+# For more complex deployments (e.g., if you are running job hosts), you can specify roles and configure each separately (see kamal docs role):
 servers:
   web:
     ...

lib/kamal/configuration/docs/ssh.yml

@@ -1,9 +1,9 @@
 # SSH configuration
 #
-# Kamal uses SSH to connect run commands on your hosts.
-# By default it will attempt to connect to the root user on port 22
+# Kamal uses SSH to connect and run commands on your hosts.
+# By default, it will attempt to connect to the root user on port 22.
 #
-# If you are using non-root user, you may need to bootstrap your servers manually, before using them with Kamal. On Ubuntu, you’d do:
+# If you are using a non-root user, you may need to bootstrap your servers manually before using them with Kamal. On Ubuntu, you’d do:
 #
 # ```shell
 # sudo apt update
@@ -12,7 +12,6 @@
 # sudo usermod -a -G docker app
 # ```
 
-
 # SSH options
 #
 # The options are specified under the ssh key in the configuration file.
@@ -20,47 +19,52 @@ ssh:
 
   # The SSH user
   #
-  # Defaults to `root`
-  #
+  # Defaults to `root`:
   user: app
 
   # The SSH port
   #
-  # Defaults to 22
+  # Defaults to 22:
   port: "2222"
 
   # Proxy host
   #
-  # Specified in the form <host> or <user>@<host>
+  # Specified in the form <host> or <user>@<host>:
   proxy: root@proxy-host
 
   # Proxy command
   #
-  # A custom proxy command, required for older versions of SSH
+  # A custom proxy command, required for older versions of SSH:
   proxy_command: "ssh -W %h:%p user@proxy"
 
   # Log level
   #
-  # Defaults to `fatal`. Set this to debug if you are having
-  # SSH connection issues.
+  # Defaults to `fatal`. Set this to `debug` if you are having SSH connection issues.
   log_level: debug
 
-  # Keys Only
+  # Keys only
   #
-  # Set to true to use only private keys from keys and key_data parameters, 
+  # Set to `true` to use only private keys from the `keys` and `key_data` parameters,
   # even if ssh-agent offers more identities. This option is intended for
-  # situations where ssh-agent offers many different identites or you have 
-  # a need to overwrite all identites and force a single one.
+  # situations where ssh-agent offers many different identities or you
+  # need to overwrite all identities and force a single one.
   keys_only: false
 
   # Keys
   #
-  # An array of file names of private keys to use for publickey
-  # and hostbased authentication
+  # An array of file names of private keys to use for public key
+  # and host-based authentication:
   keys: [ "~/.ssh/id.pem" ]
 
-  # Key Data
+  # Key data
   #
   # An array of strings, with each element of the array being
   # a raw private key in PEM format.
   key_data: [ "-----BEGIN OPENSSH PRIVATE KEY-----" ]
+
+  # Config
+  #
+  # Set to true to load the default OpenSSH config files (~/.ssh/config,
+  # /etc/ssh_config), to false ignore config files, or to a file path
+  # (or array of paths) to load specific configuration. Defaults to true.
+  config: true

lib/kamal/configuration/docs/sshkit.yml

@@ -2,8 +2,8 @@
 #
 # [SSHKit](https://github.com/capistrano/sshkit) is the SSH toolkit used by Kamal.
 #
-# The default settings should be sufficient for most use cases, but
-# when connecting to a large number of hosts you may need to adjust
+# The default, settings should be sufficient for most use cases, but
+# when connecting to a large number of hosts, you may need to adjust.
 
 # SSHKit options
 #
@@ -13,11 +13,11 @@ sshkit:
   # Max concurrent starts
   #
   # Creating SSH connections concurrently can be an issue when deploying to many servers.
-  # By default Kamal will limit concurrent connection starts to 30 at a time.
+  # By default, Kamal will limit concurrent connection starts to 30 at a time.
   max_concurrent_starts: 10
 
   # Pool idle timeout
   #
   # Kamal sets a long idle timeout of 900 seconds on connections to try to avoid
-  # re-connection storms after an idle period, like building an image or waiting for CI.
+  # re-connection storms after an idle period, such as building an image or waiting for CI.
   pool_idle_timeout: 300

lib/kamal/configuration/env.rb

@@ -1,8 +1,7 @@
 class Kamal::Configuration::Env
   include Kamal::Configuration::Validation
 
-  attr_reader :context, :secrets
-  attr_reader :clear, :secret_keys
+  attr_reader :context, :clear, :secret_keys
   delegate :argumentize, to: Kamal::Utils
 
   def initialize(config:, secrets:, context: "env")
@@ -18,12 +17,22 @@ class Kamal::Configuration::Env
   end
 
   def secrets_io
-    Kamal::EnvFile.new(secret_keys.to_h { |key| [ key, secrets[key] ] }).to_io
+    Kamal::EnvFile.new(aliased_secrets).to_io
   end
 
   def merge(other)
     self.class.new \
       config: { "clear" => clear.merge(other.clear), "secret" => secret_keys | other.secret_keys },
-      secrets: secrets
+      secrets: @secrets
   end
+
+  private
+    def aliased_secrets
+      secret_keys.to_h { |key| extract_alias(key) }.transform_values { |secret_key| @secrets[secret_key] }
+    end
+
+    def extract_alias(key)
+      key_name, key_aliased_to = key.split(":", 2)
+      [ key_name, key_aliased_to || key_name ]
+    end
 end

lib/kamal/configuration/proxy.rb

@@ -22,14 +22,14 @@ class Kamal::Configuration::Proxy
     proxy_config.fetch("ssl", false)
   end
 
-  def host
-    proxy_config["host"]
+  def hosts
+    proxy_config["hosts"] || proxy_config["host"]&.split(",") || []
   end
 
   def deploy_options
     {
-      host: proxy_config["host"],
-      tls: proxy_config["ssl"] ? true : nil,
+      host: hosts,
+      tls: proxy_config["ssl"].presence,
       "deploy-timeout": seconds_duration(config.deploy_timeout),
       "drain-timeout": seconds_duration(config.drain_timeout),
       "health-check-interval": seconds_duration(proxy_config.dig("healthcheck", "interval")),
@@ -42,17 +42,26 @@ class Kamal::Configuration::Proxy
       "max-request-body": proxy_config.dig("buffering", "max_request_body"),
       "max-response-body": proxy_config.dig("buffering", "max_response_body"),
       "forward-headers": proxy_config.dig("forward_headers"),
+      "tls-redirect": proxy_config.dig("ssl_redirect"),
       "log-request-header": proxy_config.dig("logging", "request_headers") || DEFAULT_LOG_REQUEST_HEADERS,
-      "log-response-header": proxy_config.dig("logging", "response_headers")
+      "log-response-header": proxy_config.dig("logging", "response_headers"),
+      "error-pages": error_pages
     }.compact
   end
 
   def deploy_command_args(target:)
-    optionize ({ target: "#{target}:#{app_port}" }).merge(deploy_options)
+    optionize ({ target: "#{target}:#{app_port}" }).merge(deploy_options), with: "="
   end
 
-  def remove_command_args(target:)
-    optionize({ target: "#{target}:#{app_port}" })
+  def stop_options(drain_timeout: nil, message: nil)
+    {
+      "drain-timeout": seconds_duration(drain_timeout),
+      message: message
+    }.compact
+  end
+
+  def stop_command_args(**options)
+    optionize stop_options(**options), with: "="
   end
 
   def merge(other)
@@ -63,4 +72,8 @@ class Kamal::Configuration::Proxy
     def seconds_duration(value)
       value ? "#{value}s" : nil
     end
+
+    def error_pages
+      File.join config.proxy_boot.error_pages_container_directory, config.version if config.error_pages_path
+    end
 end

lib/kamal/configuration/proxy/boot.rb

@@ -0,0 +1,121 @@
+class Kamal::Configuration::Proxy::Boot
+  MINIMUM_VERSION = "v0.9.0"
+  DEFAULT_HTTP_PORT = 80
+  DEFAULT_HTTPS_PORT = 443
+  DEFAULT_LOG_MAX_SIZE = "10m"
+
+  attr_reader :config
+  delegate :argumentize, :optionize, to: Kamal::Utils
+
+  def initialize(config:)
+    @config = config
+  end
+
+  def publish_args(http_port, https_port, bind_ips = nil)
+    ensure_valid_bind_ips(bind_ips)
+
+    (bind_ips || [ nil ]).map do |bind_ip|
+      bind_ip = format_bind_ip(bind_ip)
+      publish_http = [ bind_ip, http_port, DEFAULT_HTTP_PORT ].compact.join(":")
+      publish_https = [ bind_ip, https_port, DEFAULT_HTTPS_PORT ].compact.join(":")
+
+      argumentize "--publish", [ publish_http, publish_https ]
+    end.join(" ")
+  end
+
+  def logging_args(max_size)
+    argumentize "--log-opt", "max-size=#{max_size}" if max_size.present?
+  end
+
+  def default_boot_options
+    [
+      *(publish_args(DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT, nil)),
+      *(logging_args(DEFAULT_LOG_MAX_SIZE))
+    ]
+  end
+
+  def repository_name
+    "basecamp"
+  end
+
+  def image_name
+    "kamal-proxy"
+  end
+
+  def image_default
+    "#{repository_name}/#{image_name}"
+  end
+
+  def container_name
+    "kamal-proxy"
+  end
+
+  def host_directory
+    File.join config.run_directory, "proxy"
+  end
+
+  def options_file
+    File.join host_directory, "options"
+  end
+
+  def image_file
+    File.join host_directory, "image"
+  end
+
+  def image_version_file
+    File.join host_directory, "image_version"
+  end
+
+  def run_command_file
+    File.join host_directory, "run_command"
+  end
+
+  def apps_directory
+    File.join host_directory, "apps-config"
+  end
+
+  def apps_container_directory
+    "/home/kamal-proxy/.apps-config"
+  end
+
+  def apps_volume
+    Kamal::Configuration::Volume.new \
+      host_path: apps_directory,
+      container_path: apps_container_directory
+  end
+
+  def app_directory
+    File.join apps_directory, config.service_and_destination
+  end
+
+  def app_container_directory
+    File.join apps_container_directory, config.service_and_destination
+  end
+
+  def error_pages_directory
+    File.join app_directory, "error_pages"
+  end
+
+  def error_pages_container_directory
+    File.join app_container_directory, "error_pages"
+  end
+
+  private
+    def ensure_valid_bind_ips(bind_ips)
+      bind_ips.present? && bind_ips.each do |ip|
+        next if ip =~ Resolv::IPv4::Regex || ip =~ Resolv::IPv6::Regex
+        raise ArgumentError, "Invalid publish IP address: #{ip}"
+      end
+
+      true
+    end
+
+    def format_bind_ip(ip)
+      # Ensure IPv6 address inside square brackets - e.g. [::1]
+      if ip =~ Resolv::IPv6::Regex && ip !~ /\A\[.*\]\z/
+        "[#{ip}]"
+      else
+        ip
+      end
+    end
+end

lib/kamal/configuration/registry.rb

@@ -1,12 +1,10 @@
 class Kamal::Configuration::Registry
   include Kamal::Configuration::Validation
 
-  attr_reader :registry_config, :secrets
-
-  def initialize(config:)
-    @registry_config = config.raw_config.registry || {}
-    @secrets = config.secrets
-    validate! registry_config, with: Kamal::Configuration::Validator::Registry
+  def initialize(config:, secrets:, context: "registry")
+    @registry_config = config["registry"] || {}
+    @secrets = secrets
+    validate! registry_config, context: context, with: Kamal::Configuration::Validator::Registry
   end
 
   def server
@@ -22,6 +20,8 @@ class Kamal::Configuration::Registry
   end
 
   private
+    attr_reader :registry_config, :secrets
+
     def lookup(key)
       if registry_config[key].is_a?(Array)
         secrets[registry_config[key].first]

lib/kamal/configuration/role.rb

@@ -10,7 +10,7 @@ class Kamal::Configuration::Role
   def initialize(name, config:)
     @name, @config = name.inquiry, config
     validate! \
-      specializations,
+      role_config,
       example: validation_yml["servers"]["workers"],
       context: "servers/#{name}",
       with: Kamal::Configuration::Validator::Role
@@ -204,11 +204,11 @@ class Kamal::Configuration::Role
     end
 
     def specializations
-      if config.raw_config.servers.is_a?(Array) || config.raw_config.servers[name].is_a?(Array)
-        {}
-      else
-        config.raw_config.servers[name]
-      end
+      @specializations ||= role_config.is_a?(Array) ? {} : role_config
+    end
+
+    def role_config
+      @role_config ||= config.raw_config.servers.is_a?(Array) ? {} : config.raw_config.servers[name]
     end
 
     def custom_labels

lib/kamal/configuration/servers.rb

@@ -13,6 +13,13 @@ class Kamal::Configuration::Servers
 
   private
     def role_names
-      servers_config.is_a?(Array) ? [ "web" ] : servers_config.keys.sort
+      case servers_config
+      when Array
+        [ "web" ]
+      when NilClass
+        []
+      else
+        servers_config.keys.sort
+      end
     end
 end

lib/kamal/configuration/validator.rb

@@ -168,4 +168,10 @@ class Kamal::Configuration::Validator
       unknown_keys.reject! { |key| extension?(key) } if allow_extensions?
       unknown_keys_error unknown_keys if unknown_keys.present?
     end
+
+    def validate_docker_options!(options)
+      if options
+        error "Cannot set restart policy in docker options, unless-stopped is required" if options["restart"]
+      end
+    end
 end

lib/kamal/configuration/validator/accessory.rb

@@ -2,8 +2,10 @@ class Kamal::Configuration::Validator::Accessory < Kamal::Configuration::Validat
   def validate!
     super
 
-    if (config.keys & [ "host", "hosts", "roles" ]).size != 1
-      error "specify one of `host`, `hosts` or `roles`"
+    if (config.keys & [ "host", "hosts", "role", "roles", "tag", "tags" ]).size != 1
+      error "specify one of `host`, `hosts`, `role`, `roles`, `tag` or `tags`"
     end
+
+    validate_docker_options!(config["options"])
   end
 end

lib/kamal/configuration/validator/proxy.rb

@@ -3,9 +3,13 @@ class Kamal::Configuration::Validator::Proxy < Kamal::Configuration::Validator
     unless config.nil?
       super
 
-      if config["host"].blank? && config["ssl"]
+      if config["host"].blank? && config["hosts"].blank? && config["ssl"]
         error "Must set a host to enable automatic SSL"
       end
+
+      if (config.keys & [ "host", "hosts" ]).size > 1
+        error "Specify one of 'host' or 'hosts', not both"
+      end
     end
   end
 end

lib/kamal/configuration/validator/role.rb

@@ -3,9 +3,10 @@ class Kamal::Configuration::Validator::Role < Kamal::Configuration::Validator
     validate_type! config, Array, Hash
 
     if config.is_a?(Array)
-      validate_servers! "servers", config
+      validate_servers!(config)
     else
       super
+      validate_docker_options!(config["options"])
     end
   end
 end

lib/kamal/configuration/validator/servers.rb

@@ -1,6 +1,6 @@
 class Kamal::Configuration::Validator::Servers < Kamal::Configuration::Validator
   def validate!
-    validate_type! config, Array, Hash
+    validate_type! config, Array, Hash, NilClass
 
     validate_servers! config if config.is_a?(Array)
   end

lib/kamal/docker.rb

@@ -0,0 +1,30 @@
+require "tempfile"
+require "open3"
+
+module Kamal::Docker
+  extend self
+  BUILD_CHECK_TAG = "kamal-local-build-check"
+
+  def included_files
+    Tempfile.create do |dockerfile|
+      dockerfile.write(<<~DOCKERFILE)
+        FROM busybox
+        COPY . app
+        WORKDIR app
+        CMD find . -type f | sed "s|^\./||"
+      DOCKERFILE
+      dockerfile.close
+
+      cmd = "docker buildx build -t=#{BUILD_CHECK_TAG} -f=#{dockerfile.path} ."
+      system(cmd) || raise("failed to build check image")
+    end
+
+    cmd = "docker run --rm #{BUILD_CHECK_TAG}"
+    out, err, status = Open3.capture3(cmd)
+    unless status
+      raise "failed to run check image:\n#{err}"
+    end
+
+    out.lines.map(&:strip)
+  end
+end

lib/kamal/env_file.rb

@@ -37,6 +37,8 @@ class Kamal::EnvFile
     def escape_docker_env_file_ascii_value(value)
       # Doublequotes are treated literally in docker env files
       # so remove leading and trailing ones and unescape any others
-      value.to_s.dump[1..-2].gsub(/\\"/, "\"")
+      value.to_s.dump[1..-2]
+        .gsub(/\\"/, "\"")
+        .gsub(/\\#/, "#")
     end
 end

lib/kamal/git.rb

@@ -24,4 +24,14 @@ module Kamal::Git
   def root
     `git rev-parse --show-toplevel`.strip
   end
+
+  # returns an array of relative path names of files with uncommitted changes
+  def uncommitted_files
+    `git ls-files --modified`.lines.map(&:strip)
+  end
+
+  # returns an array of relative path names of untracked files, including gitignored files
+  def untracked_files
+    `git ls-files --others`.lines.map(&:strip)
+  end
 end

lib/kamal/secrets.rb

@@ -1,13 +1,10 @@
 require "dotenv"
 
 class Kamal::Secrets
-  attr_reader :secrets_files
-
   Kamal::Secrets::Dotenv::InlineCommandSubstitution.install!
 
   def initialize(destination: nil)
-    @secrets_files = \
-      [ ".kamal/secrets-common", ".kamal/secrets#{(".#{destination}" if destination)}" ].select { |f| File.exist?(f) }
+    @destination = destination
     @mutex = Mutex.new
   end
 
@@ -17,10 +14,10 @@ class Kamal::Secrets
       secrets.fetch(key)
     end
   rescue KeyError
-    if secrets_files
+    if secrets_files.present?
       raise Kamal::ConfigurationError, "Secret '#{key}' not found in #{secrets_files.join(", ")}"
     else
-      raise Kamal::ConfigurationError, "Secret '#{key}' not found, no secret files provided"
+      raise Kamal::ConfigurationError, "Secret '#{key}' not found, no secret files (#{secrets_filenames.join(", ")}) provided"
     end
   end
 
@@ -28,10 +25,18 @@ class Kamal::Secrets
     secrets
   end
 
+  def secrets_files
+    @secrets_files ||= secrets_filenames.select { |f| File.exist?(f) }
+  end
+
   private
     def secrets
       @secrets ||= secrets_files.inject({}) do |secrets, secrets_file|
-        secrets.merge!(::Dotenv.parse(secrets_file))
+        secrets.merge!(::Dotenv.parse(secrets_file, overwrite: true))
       end
     end
+
+    def secrets_filenames
+      [ ".kamal/secrets-common", ".kamal/secrets#{(".#{@destination}" if @destination)}" ]
+    end
 end

lib/kamal/secrets/adapters.rb

@@ -3,6 +3,8 @@ module Kamal::Secrets::Adapters
   def self.lookup(name)
     name = "one_password" if name.downcase == "1password"
     name = "last_pass" if name.downcase == "lastpass"
+    name = "gcp_secret_manager" if name.downcase == "gcp"
+    name = "bitwarden_secrets_manager" if name.downcase == "bitwarden-sm"
     adapter_class(name)
   end
 

lib/kamal/secrets/adapters/aws_secrets_manager.rb

@@ -0,0 +1,51 @@
+class Kamal::Secrets::Adapters::AwsSecretsManager < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    def login(_account)
+      nil
+    end
+
+    def fetch_secrets(secrets, from:, account: nil, session:)
+      {}.tap do |results|
+        get_from_secrets_manager(prefixed_secrets(secrets, from: from), account: account).each do |secret|
+          secret_name = secret["Name"]
+          secret_string = JSON.parse(secret["SecretString"])
+
+          secret_string.each do |key, value|
+            results["#{secret_name}/#{key}"] = value
+          end
+        rescue JSON::ParserError
+          results["#{secret_name}"] = secret["SecretString"]
+        end
+      end
+    end
+
+    def get_from_secrets_manager(secrets, account: nil)
+      args = [ "aws", "secretsmanager", "batch-get-secret-value", "--secret-id-list" ] + secrets.map(&:shellescape)
+      args += [ "--profile", account.shellescape ] if account
+      args += [ "--output", "json" ]
+      cmd = args.join(" ")
+
+      `#{cmd}`.tap do |secrets|
+        raise RuntimeError, "Could not read #{secrets} from AWS Secrets Manager" unless $?.success?
+
+        secrets = JSON.parse(secrets)
+
+        return secrets["SecretValues"] unless secrets["Errors"].present?
+
+        raise RuntimeError, secrets["Errors"].map { |error| "#{error['SecretId']}: #{error['Message']}" }.join(" ")
+      end
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "AWS CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `aws --version 2> /dev/null`
+      $?.success?
+    end
+end

lib/kamal/secrets/adapters/base.rb

@@ -1,10 +1,17 @@
 class Kamal::Secrets::Adapters::Base
   delegate :optionize, to: Kamal::Utils
 
-  def fetch(secrets, account:, from: nil)
+  def fetch(secrets, account: nil, from: nil)
+    raise RuntimeError, "Missing required option '--account'" if requires_account? && account.blank?
+
+    check_dependencies!
+
     session = login(account)
-    full_secrets = secrets.map { |secret| [ from, secret ].compact.join("/") }
-    fetch_secrets(full_secrets, account: account, session: session)
+    fetch_secrets(secrets, from: from, account: account, session: session)
+  end
+
+  def requires_account?
+    true
   end
 
   private
@@ -15,4 +22,12 @@ class Kamal::Secrets::Adapters::Base
     def fetch_secrets(...)
       raise NotImplementedError
     end
+
+    def check_dependencies!
+      raise NotImplementedError
+    end
+
+    def prefixed_secrets(secrets, from:)
+      secrets.map { |secret| [ from, secret ].compact.join("/") }
+    end
 end

lib/kamal/secrets/adapters/bitwarden.rb

@@ -21,27 +21,35 @@ class Kamal::Secrets::Adapters::Bitwarden < Kamal::Secrets::Adapters::Base
       session
     end
 
-    def fetch_secrets(secrets, account:, session:)
+    def fetch_secrets(secrets, from:, account:, session:)
       {}.tap do |results|
-        items_fields(secrets).each do |item, fields|
+        items_fields(prefixed_secrets(secrets, from: from)).each do |item, fields|
           item_json = run_command("get item #{item.shellescape}", session: session, raw: true)
-          raise RuntimeError, "Could not read #{secret} from Bitwarden" unless $?.success?
+          raise RuntimeError, "Could not read #{item} from Bitwarden" unless $?.success?
           item_json = JSON.parse(item_json)
-
           if fields.any?
-            fields.each do |field|
-              item_field = item_json["fields"].find { |f| f["name"] == field }
-              raise RuntimeError, "Could not find field #{field} in item #{item} in Bitwarden" unless item_field
-              value = item_field["value"]
-              results["#{item}/#{field}"] = value
-            end
+            results.merge! fetch_secrets_from_fields(fields, item, item_json)
+          elsif item_json.dig("login", "password")
+            results[item] = item_json.dig("login", "password")
+          elsif item_json["fields"]&.any?
+            fields = item_json["fields"].pluck("name")
+            results.merge! fetch_secrets_from_fields(fields, item, item_json)
           else
-            results[item] = item_json["login"]["password"]
+            raise RuntimeError, "Item #{item} is not a login type item and no fields were specified"
           end
         end
       end
     end
 
+    def fetch_secrets_from_fields(fields, item, item_json)
+      fields.to_h do |field|
+        item_field = item_json["fields"].find { |f| f["name"] == field }
+        raise RuntimeError, "Could not find field #{field} in item #{item} in Bitwarden" unless item_field
+        value = item_field["value"]
+        [ "#{item}/#{field}", value ]
+      end
+    end
+
     def items_fields(secrets)
       {}.tap do |items|
         secrets.each do |secret|
@@ -61,4 +69,13 @@ class Kamal::Secrets::Adapters::Bitwarden < Kamal::Secrets::Adapters::Base
       result = `#{full_command}`.strip
       raw ? result : JSON.parse(result)
     end
+
+    def check_dependencies!
+      raise RuntimeError, "Bitwarden CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `bw --version 2> /dev/null`
+      $?.success?
+    end
 end

lib/kamal/secrets/adapters/bitwarden_secrets_manager.rb

@@ -0,0 +1,72 @@
+class Kamal::Secrets::Adapters::BitwardenSecretsManager < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    LIST_ALL_SELECTOR = "all"
+    LIST_ALL_FROM_PROJECT_SUFFIX = "/all"
+    LIST_COMMAND = "secret list -o env"
+    GET_COMMAND = "secret get -o env"
+
+    def fetch_secrets(secrets, from:, account:, session:)
+      raise RuntimeError, "You must specify what to retrieve from Bitwarden Secrets Manager" if secrets.length == 0
+
+      secrets = prefixed_secrets(secrets, from: from)
+      command, project = extract_command_and_project(secrets)
+
+      {}.tap do |results|
+        if command.nil?
+          secrets.each do |secret_uuid|
+            secret = run_command("#{GET_COMMAND} #{secret_uuid.shellescape}")
+            raise RuntimeError, "Could not read #{secret_uuid} from Bitwarden Secrets Manager" unless $?.success?
+            key, value = parse_secret(secret)
+            results[key] = value
+          end
+        else
+          secrets = run_command(command)
+          raise RuntimeError, "Could not read secrets from Bitwarden Secrets Manager" unless $?.success?
+          secrets.split("\n").each do |secret|
+            key, value = parse_secret(secret)
+            results[key] = value
+          end
+        end
+      end
+    end
+
+    def extract_command_and_project(secrets)
+      if secrets.length == 1
+        if secrets[0] == LIST_ALL_SELECTOR
+          [ LIST_COMMAND, nil ]
+        elsif secrets[0].end_with?(LIST_ALL_FROM_PROJECT_SUFFIX)
+          project = secrets[0].split(LIST_ALL_FROM_PROJECT_SUFFIX).first
+          [ "#{LIST_COMMAND} #{project.shellescape}", project ]
+        end
+      end
+    end
+
+    def parse_secret(secret)
+      key, value = secret.split("=", 2)
+      value = value.gsub(/^"|"$/, "")
+      [ key, value ]
+    end
+
+    def run_command(command, session: nil)
+      full_command = [ "bws", command ].join(" ")
+      `#{full_command}`
+    end
+
+    def login(account)
+      run_command("run 'echo OK'")
+      raise RuntimeError, "Could not authenticate to Bitwarden Secrets Manager. Did you set a valid access token?" unless $?.success?
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Bitwarden Secrets Manager CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `bws --version 2> /dev/null`
+      $?.success?
+    end
+end

lib/kamal/secrets/adapters/doppler.rb

@@ -0,0 +1,57 @@
+class Kamal::Secrets::Adapters::Doppler < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    def login(*)
+      unless loggedin?
+        `doppler login -y`
+        raise RuntimeError, "Failed to login to Doppler" unless $?.success?
+      end
+    end
+
+    def loggedin?
+      `doppler me --json 2> /dev/null`
+      $?.success?
+    end
+
+    def fetch_secrets(secrets, from:, **)
+      secrets = prefixed_secrets(secrets, from: from)
+      flags = secrets_get_flags(secrets)
+
+      secret_names = secrets.collect { |s| s.split("/").last }
+
+      items = `doppler secrets get #{secret_names.map(&:shellescape).join(" ")} --json #{flags}`
+      raise RuntimeError, "Could not read #{secrets} from Doppler" unless $?.success?
+
+      items = JSON.parse(items)
+
+      items.transform_values { |value| value["computed"] }
+    end
+
+    def secrets_get_flags(secrets)
+      unless service_token_set?
+        project, config, _ = secrets.first.split("/")
+
+        unless project && config
+          raise RuntimeError, "Missing project or config from '--from=project/config' option"
+        end
+
+        project_and_config_flags = "-p #{project.shellescape} -c #{config.shellescape}"
+      end
+    end
+
+    def service_token_set?
+      ENV["DOPPLER_TOKEN"] && ENV["DOPPLER_TOKEN"][0, 5] == "dp.st"
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Doppler CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `doppler --version 2> /dev/null`
+      $?.success?
+    end
+end

lib/kamal/secrets/adapters/enpass.rb

@@ -0,0 +1,71 @@
+##
+# Enpass is different from most password managers, in a way that it's offline and doesn't need an account.
+#
+# Usage
+#
+# Fetch all password from FooBar item
+# `kamal secrets fetch --adapter enpass --from /Users/YOUR_USERNAME/Library/Containers/in.sinew.Enpass-Desktop/Data/Documents/Vaults/primary FooBar`
+#
+# Fetch only DB_PASSWORD from FooBar item
+# `kamal secrets fetch --adapter enpass --from /Users/YOUR_USERNAME/Library/Containers/in.sinew.Enpass-Desktop/Data/Documents/Vaults/primary FooBar/DB_PASSWORD`
+class Kamal::Secrets::Adapters::Enpass < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    def fetch_secrets(secrets, from:, account:, session:)
+      secrets_titles = fetch_secret_titles(secrets)
+
+      result = `enpass-cli -json -vault #{from.shellescape} show #{secrets_titles.map(&:shellescape).join(" ")}`.strip
+
+      parse_result_and_take_secrets(result, secrets)
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Enpass CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `enpass-cli version 2> /dev/null`
+      $?.success?
+    end
+
+    def login(account)
+      nil
+    end
+
+    def fetch_secret_titles(secrets)
+      secrets.reduce(Set.new) do |secret_titles, secret|
+        # Sometimes secrets contain a '/', when the intent is to fetch a single password for an item. Example: FooBar/DB_PASSWORD
+        # Another case is, when the intent is to fetch all passwords for an item. Example: FooBar (and FooBar may have multiple different passwords)
+        key, separator, value = secret.rpartition("/")
+        if key.empty?
+          secret_titles << value
+        else
+          secret_titles << key
+        end
+      end.to_a
+    end
+
+    def parse_result_and_take_secrets(unparsed_result, secrets)
+      result = JSON.parse(unparsed_result)
+
+      result.reduce({}) do |secrets_with_passwords, item|
+        title = item["title"]
+        label = item["label"]
+        password = item["password"]
+
+        if title && password.present?
+          key = [ title, label ].compact.reject(&:empty?).join("/")
+
+          if secrets.include?(title) || secrets.include?(key)
+            raise RuntimeError, "#{key} is present more than once" if secrets_with_passwords[key]
+            secrets_with_passwords[key] = password
+          end
+        end
+
+        secrets_with_passwords
+      end
+    end
+end

lib/kamal/secrets/adapters/gcp_secret_manager.rb

@@ -0,0 +1,112 @@
+class Kamal::Secrets::Adapters::GcpSecretManager < Kamal::Secrets::Adapters::Base
+  private
+    def login(account)
+      # Since only the account option is passed from the cli, we'll use it for both account and service account
+      # impersonation.
+      #
+      # Syntax:
+      # ACCOUNT: USER | USER "|" DELEGATION_CHAIN
+      # USER: DEFAULT_USER | EMAIL
+      # DELEGATION_CHAIN: EMAIL | EMAIL "," DELEGATION_CHAIN
+      # EMAIL: <The email address of the user or service account, like "my-user@example.com" >
+      # DEFAULT_USER: "default"
+      #
+      # Some valid examples:
+      # - "my-user@example.com" sets the user
+      # - "my-user@example.com|my-service-user@example.com" will use my-user and enable service account impersonation as my-service-user
+      # - "default" will use the default user and no impersonation
+      # - "default|my-service-user@example.com" will use the default user, and enable service account impersonation as my-service-user
+      # - "default|my-service-user@example.com,another-service-user@example.com" same as above, but with an impersonation delegation chain
+
+      unless logged_in?
+        `gcloud auth login`
+        raise RuntimeError, "could not login to gcloud" unless logged_in?
+      end
+
+      nil
+    end
+
+    def fetch_secrets(secrets, from:, account:, session:)
+      user, service_account = parse_account(account)
+
+      {}.tap do |results|
+        secrets_with_metadata(prefixed_secrets(secrets, from: from)).each do |secret, (project, secret_name, secret_version)|
+          item_name = "#{project}/#{secret_name}"
+          results[item_name] = fetch_secret(project, secret_name, secret_version, user, service_account)
+          raise RuntimeError, "Could not read #{item_name} from Google Secret Manager" unless $?.success?
+        end
+      end
+    end
+
+    def fetch_secret(project, secret_name, secret_version, user, service_account)
+      secret = run_command(
+        "secrets versions access #{secret_version.shellescape} --secret=#{secret_name.shellescape}",
+        project: project,
+        user: user,
+        service_account: service_account
+      )
+      Base64.decode64(secret.dig("payload", "data"))
+    end
+
+    # The secret needs to at least contain a secret name, but project name, and secret version can also be specified.
+    #
+    # The string "default" can be used to refer to the default project configured for gcloud.
+    #
+    # The version can be either the string "latest", or a version number.
+    #
+    # The following formats are valid:
+    #
+    # - The following are all equivalent, and sets project: default, secret name: my-secret, version: latest
+    #   - "my-secret"
+    #   - "default/my-secret"
+    #   - "default/my-secret/latest"
+    #   - "my-secret/latest" in combination with --from=default
+    # - "my-secret/123" (only in combination with --from=some-project) -> project: some-project, secret name: my-secret, version: 123
+    # - "some-project/my-secret/123" -> project: some-project, secret name: my-secret, version: 123
+    def secrets_with_metadata(secrets)
+      {}.tap do |items|
+        secrets.each do |secret|
+          parts = secret.split("/")
+          parts.unshift("default") if parts.length == 1
+          project = parts.shift
+          secret_name = parts.shift
+          secret_version = parts.shift || "latest"
+
+          items[secret] = [ project, secret_name, secret_version ]
+        end
+      end
+    end
+
+    def run_command(command, project: "default", user: "default", service_account: nil)
+      full_command = [ "gcloud", command ]
+      full_command << "--project=#{project.shellescape}" unless project == "default"
+      full_command << "--account=#{user.shellescape}" unless user == "default"
+      full_command << "--impersonate-service-account=#{service_account.shellescape}" if service_account
+      full_command << "--format=json"
+      full_command = full_command.join(" ")
+
+      result = `#{full_command}`.strip
+      JSON.parse(result)
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "gcloud CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `gcloud --version 2> /dev/null`
+      $?.success?
+    end
+
+    def logged_in?
+      JSON.parse(`gcloud auth list --format=json`).any?
+    end
+
+    def parse_account(account)
+      account.split("|", 2)
+    end
+
+    def is_user?(candidate)
+      candidate.include?("@")
+    end
+end

lib/kamal/secrets/adapters/last_pass.rb

@@ -11,7 +11,8 @@ class Kamal::Secrets::Adapters::LastPass < Kamal::Secrets::Adapters::Base
       `lpass status --color never`.strip == "Logged in as #{account}."
     end
 
-    def fetch_secrets(secrets, account:, session:)
+    def fetch_secrets(secrets, from:, account:, session:)
+      secrets = prefixed_secrets(secrets, from: from)
       items = `lpass show #{secrets.map(&:shellescape).join(" ")} --json`
       raise RuntimeError, "Could not read #{secrets} from LastPass" unless $?.success?
 
@@ -23,8 +24,17 @@ class Kamal::Secrets::Adapters::LastPass < Kamal::Secrets::Adapters::Base
         end
 
         if (missing_items = secrets - results.keys).any?
-          raise RuntimeError, "Could not find #{missing_items.join(", ")} in LassPass"
+          raise RuntimeError, "Could not find #{missing_items.join(", ")} in LastPass"
         end
       end
     end
+
+    def check_dependencies!
+      raise RuntimeError, "LastPass CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `lpass --version 2> /dev/null`
+      $?.success?
+    end
 end

lib/kamal/secrets/adapters/one_password.rb

@@ -15,9 +15,9 @@ class Kamal::Secrets::Adapters::OnePassword < Kamal::Secrets::Adapters::Base
       $?.success?
     end
 
-    def fetch_secrets(secrets, account:, session:)
+    def fetch_secrets(secrets, from:, account:, session:)
       {}.tap do |results|
-        vaults_items_fields(secrets).map do |vault, items|
+        vaults_items_fields(prefixed_secrets(secrets, from: from)).map do |vault, items|
           items.each do |item, fields|
             fields_json = JSON.parse(op_item_get(vault, item, fields, account: account, session: session))
             fields_json = [ fields_json ] if fields.one?
@@ -58,4 +58,13 @@ class Kamal::Secrets::Adapters::OnePassword < Kamal::Secrets::Adapters::Base
         raise RuntimeError, "Could not read #{fields.join(", ")} from #{item} in the #{vault} 1Password vault" unless $?.success?
       end
     end
+
+    def check_dependencies!
+      raise RuntimeError, "1Password CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `op --version 2> /dev/null`
+      $?.success?
+    end
 end

lib/kamal/secrets/adapters/test.rb

@@ -4,7 +4,11 @@ class Kamal::Secrets::Adapters::Test < Kamal::Secrets::Adapters::Base
       true
     end
 
-    def fetch_secrets(secrets, account:, session:)
-      secrets.to_h { |secret| [ secret, secret.reverse ] }
+    def fetch_secrets(secrets, from:, account:, session:)
+      prefixed_secrets(secrets, from: from).to_h { |secret| [ secret, secret.reverse ] }
+    end
+
+    def check_dependencies!
+      # no op
     end
 end

lib/kamal/secrets/dotenv/inline_command_substitution.rb

@@ -4,7 +4,7 @@ class Kamal::Secrets::Dotenv::InlineCommandSubstitution
       ::Dotenv::Parser.substitutions.map! { |sub| sub == ::Dotenv::Substitutions::Command ? self : sub }
     end
 
-    def call(value, _env, overwrite: false)
+    def call(value, env, overwrite: false)
       # Process interpolated shell commands
       value.gsub(Dotenv::Substitutions::Command.singleton_class::INTERPOLATED_SHELL_COMMAND) do |*|
         # Eliminate opening and closing parentheses
@@ -14,6 +14,7 @@ class Kamal::Secrets::Dotenv::InlineCommandSubstitution
           # Command is escaped, don't replace it.
           $LAST_MATCH_INFO[0][1..]
         else
+          command = ::Dotenv::Substitutions::Variable.call(command, env)
           if command =~ /\A\s*kamal\s*secrets\s+/
             # Inline the command
             inline_secrets_command(command)

lib/kamal/utils.rb

@@ -12,6 +12,8 @@ module Kamal::Utils
         attr = "#{key}=#{escape_shell_value(value)}"
         attr = self.sensitive(attr, redaction: "#{key}=[REDACTED]") if sensitive
         [ argument, attr ]
+      elsif value == false
+        [ argument, "#{key}=false" ]
       else
         [ argument, key ]
       end

lib/kamal/version.rb

@@ -1,3 +1,3 @@
 module Kamal
-  VERSION = "2.0.0"
+  VERSION = "2.6.0"
 end

test/cli/accessory_test.rb

@@ -14,8 +14,8 @@ class CliAccessoryTest < CliTestCase
     Kamal::Cli::Accessory.any_instance.expects(:upload).with("mysql")
 
     run_command("boot", "mysql").tap do |output|
-      assert_match /docker login.*on 1.1.1.3/, output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST=\"%\" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.3", output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST=\"%\" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" private.registry/mysql:5.7 on 1.1.1.3", output
     end
   end
 
@@ -24,17 +24,21 @@ class CliAccessoryTest < CliTestCase
     Kamal::Cli::Accessory.any_instance.expects(:upload).with("mysql")
     Kamal::Cli::Accessory.any_instance.expects(:directories).with("redis")
     Kamal::Cli::Accessory.any_instance.expects(:upload).with("redis")
+    Kamal::Cli::Accessory.any_instance.expects(:directories).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:upload).with("busybox")
 
     run_command("boot", "all").tap do |output|
-      assert_match /docker login.*on 1.1.1.3/, output
-      assert_match /docker login.*on 1.1.1.1/, output
-      assert_match /docker login.*on 1.1.1.2/, output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.3", output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.1", output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.2", output
+      assert_match "docker login other.registry -u [REDACTED] -p [REDACTED] on 1.1.1.3", output
       assert_match /docker network create kamal.*on 1.1.1.1/, output
       assert_match /docker network create kamal.*on 1.1.1.2/, output
       assert_match /docker network create kamal.*on 1.1.1.3/, output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST=\"%\" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST=\"%\" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" private.registry/mysql:5.7 on 1.1.1.3", output
       assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.1", output
       assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
+      assert_match "docker run --name custom-box --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --env-file .kamal/apps/app/env/accessories/busybox.env --label service=\"custom-box\" other.registry/busybox:latest on 1.1.1.3", output
     end
   end
 
@@ -60,13 +64,16 @@ class CliAccessoryTest < CliTestCase
   end
 
   test "reboot all" do
-    Kamal::Commands::Registry.any_instance.expects(:login).times(3)
+    Kamal::Commands::Registry.any_instance.expects(:login).times(4)
     Kamal::Cli::Accessory.any_instance.expects(:stop).with("mysql")
     Kamal::Cli::Accessory.any_instance.expects(:remove_container).with("mysql")
     Kamal::Cli::Accessory.any_instance.expects(:boot).with("mysql", prepare: false)
     Kamal::Cli::Accessory.any_instance.expects(:stop).with("redis")
     Kamal::Cli::Accessory.any_instance.expects(:remove_container).with("redis")
     Kamal::Cli::Accessory.any_instance.expects(:boot).with("redis", prepare: false)
+    Kamal::Cli::Accessory.any_instance.expects(:stop).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:remove_container).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:boot).with("busybox", prepare: false)
 
     run_command("reboot", "all")
   end
@@ -94,7 +101,7 @@ class CliAccessoryTest < CliTestCase
   end
 
   test "details with non-existent accessory" do
-    assert_equal "No accessory by the name of 'hello' (options: mysql and redis)", stderred { run_command("details", "hello") }
+    assert_equal "No accessory by the name of 'hello' (options: mysql, redis, and busybox)", stderred { run_command("details", "hello") }
   end
 
   test "details with all" do
@@ -108,6 +115,7 @@ class CliAccessoryTest < CliTestCase
 
   test "exec" do
     run_command("exec", "mysql", "mysql -v").tap do |output|
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED]", output
       assert_match "Launching command from new container", output
       assert_match "mysql -v", output
     end
@@ -180,6 +188,10 @@ class CliAccessoryTest < CliTestCase
     Kamal::Cli::Accessory.any_instance.expects(:remove_container).with("redis")
     Kamal::Cli::Accessory.any_instance.expects(:remove_image).with("redis")
     Kamal::Cli::Accessory.any_instance.expects(:remove_service_directory).with("redis")
+    Kamal::Cli::Accessory.any_instance.expects(:stop).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:remove_container).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:remove_image).with("busybox")
+    Kamal::Cli::Accessory.any_instance.expects(:remove_service_directory).with("busybox")
 
     run_command("remove", "all", "-y")
   end
@@ -189,7 +201,7 @@ class CliAccessoryTest < CliTestCase
   end
 
   test "remove_image" do
-    assert_match "docker image rm --force mysql", run_command("remove_image", "mysql")
+    assert_match "docker image rm --force private.registry/mysql:5.7", run_command("remove_image", "mysql")
   end
 
   test "remove_service_directory" do
@@ -201,8 +213,8 @@ class CliAccessoryTest < CliTestCase
     Kamal::Cli::Accessory.any_instance.expects(:upload).with("redis")
 
     run_command("boot", "redis", "--hosts", "1.1.1.1").tap do |output|
-      assert_match /docker login.*on 1.1.1.1/, output
-      assert_no_match /docker login.*on 1.1.1.2/, output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.1", output
+      assert_no_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.2", output
       assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.1", output
       assert_no_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
     end
@@ -213,8 +225,8 @@ class CliAccessoryTest < CliTestCase
     Kamal::Cli::Accessory.any_instance.expects(:upload).with("redis")
 
     run_command("boot", "redis", "--hosts", "1.1.1.1,1.1.1.3").tap do |output|
-      assert_match /docker login.*on 1.1.1.1/, output
-      assert_no_match /docker login.*on 1.1.1.3/, output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.1", output
+      assert_no_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.3", output
       assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.1", output
       assert_no_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.3", output
     end
@@ -225,7 +237,7 @@ class CliAccessoryTest < CliTestCase
       assert_match "Upgrading all accessories on 1.1.1.3,1.1.1.1,1.1.1.2...", output
       assert_match "docker network create kamal on 1.1.1.3", output
       assert_match "docker container stop app-mysql on 1.1.1.3", output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST="%" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST="%" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" private.registry/mysql:5.7 on 1.1.1.3", output
       assert_match "Upgraded all accessories on 1.1.1.3,1.1.1.1,1.1.1.2...", output
     end
   end
@@ -235,14 +247,26 @@ class CliAccessoryTest < CliTestCase
       assert_match "Upgrading all accessories on 1.1.1.3...", output
       assert_match "docker network create kamal on 1.1.1.3", output
       assert_match "docker container stop app-mysql on 1.1.1.3", output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST="%" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" mysql:5.7 on 1.1.1.3", output
+      assert_match "docker run --name app-mysql --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 3306:3306 --env MYSQL_ROOT_HOST="%" --env-file .kamal/apps/app/env/accessories/mysql.env --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=\"app-mysql\" private.registry/mysql:5.7 on 1.1.1.3", output
       assert_match "Upgraded all accessories on 1.1.1.3", output
     end
   end
 
+  test "boot with web role filter" do
+    run_command("boot", "redis", "-r", "web").tap do |output|
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.1", output
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/apps/app/env/accessories/redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
+    end
+  end
+
+  test "boot with workers role filter" do
+    run_command("boot", "redis", "-r", "workers").tap do |output|
+      assert_no_match "docker run", output
+    end
+  end
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Accessory.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
+      stdouted { Kamal::Cli::Accessory.start([ *command, "-c", "test/fixtures/deploy_with_accessories_with_different_registries.yml" ]) }
     end
 end

test/cli/app_test.rb

@@ -19,7 +19,7 @@ class CliAppTest < CliTestCase
       .returns("12345678") # running version
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("123") # old version
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
@@ -37,13 +37,20 @@ class CliAppTest < CliTestCase
   end
 
   test "boot uses group strategy when specified" do
-    Kamal::Cli::App.any_instance.stubs(:on).with("1.1.1.1").times(2) # ensure locks dir, acquire & release lock
-    Kamal::Cli::App.any_instance.stubs(:on).with([ "1.1.1.1" ]) # tag container
+    Kamal::Cli::App.any_instance.stubs(:on).with("1.1.1.1").twice
+    Kamal::Cli::App.any_instance.stubs(:on).with([ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ]).times(3)
 
     # Strategy is used when booting the containers
-    Kamal::Cli::App.any_instance.expects(:on).with([ "1.1.1.1" ], in: :groups, limit: 3, wait: 2).with_block_given
+    Kamal::Cli::App.any_instance.expects(:on).with([ "1.1.1.1", "1.1.1.2", "1.1.1.3" ]).with_block_given
+    Kamal::Cli::App.any_instance.expects(:on).with([ "1.1.1.4" ]).with_block_given
+    Object.any_instance.expects(:sleep).with(2).twice
 
-    run_command("boot", config: :with_boot_strategy)
+    Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+
+    run_command("boot", config: :with_boot_strategy, host: nil).tap do |output|
+      assert_hook_ran "pre-app-boot", output, count: 2
+      assert_hook_ran "post-app-boot", output, count: 2
+    end
   end
 
   test "boot errors don't leave lock in place" do
@@ -63,7 +70,7 @@ class CliAppTest < CliTestCase
       .returns("12345678") # running version
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("123").twice # old version
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
@@ -73,7 +80,7 @@ class CliAppTest < CliTestCase
     run_command("boot", config: :with_assets).tap do |output|
       assert_match "docker tag dhh/app:latest dhh/app:latest", output
       assert_match "/usr/bin/env mkdir -p .kamal/apps/app/assets/volumes/web-latest ; cp -rnT .kamal/apps/app/assets/extracted/web-latest .kamal/apps/app/assets/volumes/web-latest ; cp -rnT .kamal/apps/app/assets/extracted/web-latest .kamal/apps/app/assets/volumes/web-123 || true ; cp -rnT .kamal/apps/app/assets/extracted/web-123 .kamal/apps/app/assets/volumes/web-latest || true", output
-      assert_match "/usr/bin/env mkdir -p .kamal/apps/app/assets/extracted/web-latest && docker stop -t 1 app-web-assets 2> /dev/null || true && docker run --name app-web-assets --detach --rm --entrypoint sleep dhh/app:latest 1000000 && docker cp -L app-web-assets:/public/assets/. .kamal/apps/app/assets/extracted/web-latest && docker stop -t 1 app-web-assets", output
+      assert_match "/usr/bin/env mkdir -p .kamal/apps/app/assets/extracted/web-latest && docker container rm app-web-assets 2> /dev/null || true && docker container create --name app-web-assets dhh/app:latest && docker container cp -L app-web-assets:/public/assets/. .kamal/apps/app/assets/extracted/web-latest && docker container rm app-web-assets", output
       assert_match /docker run --detach --restart unless-stopped --name app-web-latest --network kamal --hostname 1.1.1.1-[0-9a-f]{12} /, output
       assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
       assert_match "/usr/bin/env find .kamal/apps/app/assets/extracted -maxdepth 1 -name 'web-*' ! -name web-latest -exec rm -rf \"{}\" + ; find .kamal/apps/app/assets/volumes -maxdepth 1 -name 'web-*' ! -name web-latest -exec rm -rf \"{}\" +", output
@@ -92,7 +99,7 @@ class CliAppTest < CliTestCase
       .returns("12345678") # running version
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("123") # old version
 
     run_command("boot", config: :with_env_tags).tap do |output|
@@ -130,7 +137,7 @@ class CliAppTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.stubs(:execute)
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet", "|", :xargs, :docker, :stop, raise_on_non_zero_exit: false)
     SSHKit::Backend::Abstract.any_instance.expects(:execute)
-      .with(:docker, :exec, "kamal-proxy", "kamal-proxy", :deploy, "app-web", "--target", "\"123:80\"", "--deploy-timeout", "\"1s\"", "--drain-timeout", "\"30s\"", "--buffer-requests", "--buffer-responses", "--log-request-header", "\"Cache-Control\"", "--log-request-header", "\"Last-Modified\"", "--log-request-header", "\"User-Agent\"").raises(SSHKit::Command::Failed.new("Failed to deploy"))
+      .with(:docker, :exec, "kamal-proxy", "kamal-proxy", :deploy, "app-web", "--target=\"123:80\"", "--deploy-timeout=\"1s\"", "--drain-timeout=\"30s\"", "--buffer-requests", "--buffer-responses", "--log-request-header=\"Cache-Control\"", "--log-request-header=\"Last-Modified\"", "--log-request-header=\"User-Agent\"").raises(SSHKit::Command::Failed.new("Failed to deploy"))
 
     stderred do
       run_command("boot", config: :with_roles, host: nil, allow_execute_error: true).tap do |output|
@@ -185,28 +192,56 @@ class CliAppTest < CliTestCase
     Thread.report_on_exception = true
   end
 
+  test "boot with only workers" do
+    Object.any_instance.stubs(:sleep)
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info).returns("123") # old version
+
+    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
+      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-workers-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
+      .returns("running").at_least_once # workers health check
+
+    run_command("boot", config: :with_only_workers, host: nil).tap do |output|
+      assert_match /First workers container is healthy on 1.1.1.\d, booting any other roles/, output
+      assert_no_match "kamal-proxy", output
+    end
+  end
+
+  test "boot with error pages" do
+    with_error_pages(directory: "public") do
+      stub_running
+      run_command("boot", config: :with_error_pages).tap do |output|
+        assert_match /Uploading .*kamal-error-pages.*\/latest to \.kamal\/proxy\/apps-config\/app\/error_pages/, output
+        assert_match "docker tag dhh/app:latest dhh/app:latest", output
+        assert_match /docker run --detach --restart unless-stopped --name app-web-latest --network kamal --hostname 1.1.1.1-[0-9a-f]{12} /, output
+        assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
+        assert_match "Running /usr/bin/env find .kamal/proxy/apps-config/app/error_pages -mindepth 1 -maxdepth 1 ! -name latest -exec rm -rf {} + on 1.1.1.1", output
+      end
+    end
+  end
+
   test "start" do
     SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info).returns("999") # old version
 
     run_command("start").tap do |output|
       assert_match "docker start app-web-999", output
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target \"999:80\" --deploy-timeout \"30s\" --drain-timeout \"30s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\"", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target=\"999:80\" --deploy-timeout=\"30s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\"", output
     end
   end
 
   test "stop" do
     run_command("stop").tap do |output|
-      assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker stop", output
+      assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker stop", output
     end
   end
 
   test "stale_containers" do
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=destination=", "--filter", "label=role=web", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("12345678\n87654321\n")
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("12345678\n")
 
     run_command("stale_containers").tap do |output|
@@ -216,11 +251,11 @@ class CliAppTest < CliTestCase
 
   test "stop stale_containers" do
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=destination=", "--filter", "label=role=web", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("12345678\n87654321\n")
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("12345678\n")
 
     run_command("stale_containers", "--stop").tap do |output|
@@ -231,15 +266,17 @@ class CliAppTest < CliTestCase
 
   test "details" do
     run_command("details").tap do |output|
-      assert_match "docker ps --filter label=service=app --filter label=role=web", output
+      assert_match "docker ps --filter label=service=app --filter label=destination= --filter label=role=web", output
     end
   end
 
   test "remove" do
     run_command("remove").tap do |output|
-      assert_match /#{Regexp.escape("sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker stop")}/, output
-      assert_match /#{Regexp.escape("docker container prune --force --filter label=service=app")}/, output
-      assert_match /#{Regexp.escape("docker image prune --all --force --filter label=service=app")}/, output
+      assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker stop", output
+      assert_match "docker container prune --force --filter label=service=app", output
+      assert_match "docker image prune --all --force --filter label=service=app", output
+      assert_match "rm -r .kamal/apps/app on 1.1.1.1", output
+      assert_match "rm -r .kamal/proxy/apps-config/app on 1.1.1.1", output
     end
   end
 
@@ -261,40 +298,86 @@ class CliAppTest < CliTestCase
     end
   end
 
+  test "remove_app_directories" do
+    run_command("remove_app_directories").tap do |output|
+      assert_match "rm -r .kamal/apps/app on 1.1.1.1", output
+      assert_match "rm -r .kamal/proxy/apps-config/app on 1.1.1.1", output
+    end
+  end
+
   test "exec" do
     run_command("exec", "ruby -v").tap do |output|
-      assert_match "docker run --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env dhh/app:latest ruby -v", output
+      assert_match "docker login -u [REDACTED] -p [REDACTED]", output
+      assert_match "docker run --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env --log-opt max-size=\"10m\" dhh/app:latest ruby -v", output
     end
   end
 
+  test "exec without command fails" do
+    error = assert_raises(ArgumentError, "Exec requires a command to be specified") do
+      run_command("exec")
+    end
+    assert_equal "No command provided. You must specify a command to execute.", error.message
+  end
+
   test "exec separate arguments" do
     run_command("exec", "ruby", " -v").tap do |output|
-      assert_match "docker run --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env dhh/app:latest ruby -v", output
+      assert_match "docker run --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env --log-opt max-size=\"10m\" dhh/app:latest ruby -v", output
+    end
+  end
+
+  test "exec detach" do
+    run_command("exec", "--detach", "ruby -v").tap do |output|
+      assert_match "docker run --detach --network kamal --env-file .kamal/apps/app/env/roles/web.env --log-opt max-size=\"10m\" dhh/app:latest ruby -v", output
+    end
+  end
+
+  test "exec detach with reuse" do
+    assert_raises(ArgumentError, "Detach is not compatible with reuse") do
+      run_command("exec", "--detach", "--reuse", "ruby -v")
+    end
+  end
+
+  test "exec detach with interactive" do
+    assert_raises(ArgumentError, "Detach is not compatible with interactive") do
+      run_command("exec", "--interactive", "--detach", "ruby -v")
+    end
+  end
+
+  test "exec detach with interactive and reuse" do
+    assert_raises(ArgumentError, "Detach is not compatible with interactive or reuse") do
+      run_command("exec", "--interactive", "--detach", "--reuse", "ruby -v")
     end
   end
 
   test "exec with reuse" do
     run_command("exec", "--reuse", "ruby -v").tap do |output|
-      assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output # Get current version
+      assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output # Get current version
       assert_match "docker exec app-web-999 ruby -v", output
     end
   end
 
   test "exec interactive" do
+    Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
     SSHKit::Backend::Abstract.any_instance.expects(:exec)
-      .with("ssh -t root@1.1.1.1 -p 22 'docker run -it --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env dhh/app:latest ruby -v'")
+      .with("ssh -t root@1.1.1.1 -p 22 'docker run -it --rm --network kamal --env-file .kamal/apps/app/env/roles/web.env --log-opt max-size=\"10m\" dhh/app:latest ruby -v'")
+
     run_command("exec", "-i", "ruby -v").tap do |output|
+      assert_hook_ran "pre-connect", output
+      assert_match "docker login -u [REDACTED] -p [REDACTED]", output
       assert_match "Get most recent version available as an image...", output
       assert_match "Launching interactive command with version latest via SSH from new container on 1.1.1.1...", output
     end
   end
 
   test "exec interactive with reuse" do
+    Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
     SSHKit::Backend::Abstract.any_instance.expects(:exec)
       .with("ssh -t root@1.1.1.1 -p 22 'docker exec -it app-web-999 ruby -v'")
+
     run_command("exec", "-i", "--reuse", "ruby -v").tap do |output|
+      assert_hook_ran "pre-connect", output
       assert_match "Get current version of running container...", output
-      assert_match "Running /usr/bin/env sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done on 1.1.1.1", output
+      assert_match "Running /usr/bin/env sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done on 1.1.1.1", output
       assert_match "Launching interactive command with version 999 via SSH from existing container on 1.1.1.1...", output
     end
   end
@@ -313,46 +396,55 @@ class CliAppTest < CliTestCase
 
   test "logs" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 'sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1| xargs docker logs --timestamps --tail 10 2>&1'")
+      .with("ssh -t root@1.1.1.1 'sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1| xargs docker logs --timestamps --tail 10 2>&1'")
 
-    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps --tail 100 2>&1", run_command("logs")
+    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps --tail 100 2>&1", run_command("logs")
 
-    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps 2>&1 | grep 'hey'", run_command("logs", "--grep", "hey")
+    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps 2>&1 | grep 'hey'", run_command("logs", "--grep", "hey")
 
-    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps 2>&1 | grep 'hey' -C 2", run_command("logs", "--grep", "hey", "--grep-options", "-C 2")
+    assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker logs --timestamps 2>&1 | grep 'hey' -C 2", run_command("logs", "--grep", "hey", "--grep-options", "-C 2")
   end
 
   test "logs with follow" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
+      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
 
-    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --tail 10 --follow 2>&1", run_command("logs", "--follow")
+    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --tail 10 --follow 2>&1", run_command("logs", "--follow")
+  end
+
+  test "logs with follow and container_id" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.1 -p 22 'echo ID123 | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
+
+    assert_match "echo ID123 | xargs docker logs --timestamps --tail 10 --follow 2>&1", run_command("logs", "--follow", "--container-id", "ID123")
   end
 
   test "logs with follow and grep" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\"'")
+      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\"'")
 
-    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\"", run_command("logs", "--follow", "--grep", "hey")
+    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\"", run_command("logs", "--follow", "--grep", "hey")
   end
 
   test "logs with follow, grep and grep options" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\" -C 2'")
+      .with("ssh -t root@1.1.1.1 -p 22 'sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\" -C 2'")
 
-    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\" -C 2", run_command("logs", "--follow", "--grep", "hey", "--grep-options", "-C 2")
+    assert_match "sh -c '\\''docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''\\'\\'''\\''{{.ID}}'\\''\\'\\'''\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'\\'' | head -1 | xargs docker logs --timestamps --follow 2>&1 | grep \"hey\" -C 2", run_command("logs", "--follow", "--grep", "hey", "--grep-options", "-C 2")
   end
 
   test "version" do
     run_command("version").tap do |output|
-      assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output
+      assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output
     end
   end
 
 
   test "version through main" do
-    stdouted { Kamal::Cli::Main.start([ "app", "version", "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1" ]) }.tap do |output|
-      assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output
+    with_argv([ "app", "version", "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1" ]) do
+      stdouted { Kamal::Cli::Main.start }.tap do |output|
+        assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | while read line; do echo ${line#app-web-}; done", output
+      end
     end
   end
 
@@ -383,7 +475,7 @@ class CliAppTest < CliTestCase
       assert_match /Renaming container .* to .* as already deployed on 1.1.1.1/, output # Rename
       assert_match /docker rename app-web-latest app-web-latest_replaced_[0-9a-f]{16}/, output
       assert_match /docker run --detach --restart unless-stopped --name app-web-latest --network kamal --hostname 1.1.1.1-[0-9a-f]{12} -e KAMAL_CONTAINER_NAME="app-web-latest" -e KAMAL_VERSION="latest" --env-file .kamal\/apps\/app\/env\/roles\/web.env --log-opt max-size="10m" --label service="app" --label role="web" --label destination dhh\/app:latest/, output
-      assert_match /docker exec kamal-proxy kamal-proxy deploy app-web --target "123:80"/, output
+      assert_match /docker exec kamal-proxy kamal-proxy deploy app-web --target="123:80"/, output
       assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
     end
   end
@@ -392,8 +484,26 @@ class CliAppTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info).returns("123") # old version
 
     run_command("boot", config: :with_proxy_roles, host: nil).tap do |output|
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target \"123:80\" --deploy-timeout \"6s\" --drain-timeout \"30s\" --target-timeout \"10s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\"", output
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web2 --target \"123:80\" --deploy-timeout \"6s\" --drain-timeout \"30s\" --target-timeout \"15s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\"", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target=\"123:80\" --deploy-timeout=\"6s\" --drain-timeout=\"30s\" --target-timeout=\"10s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\"", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web2 --target=\"123:80\" --deploy-timeout=\"6s\" --drain-timeout=\"30s\" --target-timeout=\"15s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\"", output
+    end
+  end
+
+  test "live" do
+    run_command("live").tap do |output|
+      assert_match "docker exec kamal-proxy kamal-proxy resume app-web on 1.1.1.1", output
+    end
+  end
+
+  test "maintenance" do
+    run_command("maintenance").tap do |output|
+      assert_match "docker exec kamal-proxy kamal-proxy stop app-web --drain-timeout=\"30s\" on 1.1.1.1", output
+    end
+  end
+
+  test "maintenance with options" do
+    run_command("maintenance", "--message", "Hello", "--drain_timeout", "10").tap do |output|
+      assert_match "docker exec kamal-proxy kamal-proxy stop app-web --drain-timeout=\"10s\" --message=\"Hello\" on 1.1.1.1", output
     end
   end
 

test/cli/build_test.rb

@@ -11,7 +11,6 @@ class CliBuildTest < CliTestCase
   test "push" do
     with_build_directory do |build_directory|
       Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
-      hook_variables = { version: 999, service_version: "app@999", hosts: "1.1.1.1,1.1.1.2,1.1.1.3,1.1.1.4", command: "build", subcommand: "push" }
 
       SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
         .with(:git, "-C", anything, :"rev-parse", :HEAD)
@@ -22,11 +21,33 @@ class CliBuildTest < CliTestCase
         .returns("")
 
       run_command("push", "--verbose").tap do |output|
-        assert_hook_ran "pre-build", output, **hook_variables
+        assert_hook_ran "pre-build", output
         assert_match /Cloning repo into build directory/, output
         assert_match /git -C #{Dir.tmpdir}\/kamal-clones\/app-#{pwd_sha} clone #{Dir.pwd}/, output
         assert_match /docker --version && docker buildx version/, output
-        assert_match /docker buildx build --push --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
+        assert_match /docker buildx build --output=type=registry --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. 2>&1 as .*@localhost/, output
+      end
+    end
+  end
+
+  test "push --output=docker" do
+    with_build_directory do |build_directory|
+      Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+
+      SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
+        .with(:git, "-C", anything, :"rev-parse", :HEAD)
+        .returns(Kamal::Git.revision)
+
+      SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
+        .with(:git, "-C", anything, :status, "--porcelain")
+        .returns("")
+
+      run_command("push", "--output=docker", "--verbose").tap do |output|
+        assert_hook_ran "pre-build", output
+        assert_match /Cloning repo into build directory/, output
+        assert_match /git -C #{Dir.tmpdir}\/kamal-clones\/app-#{pwd_sha} clone #{Dir.pwd}/, output
+        assert_match /docker --version && docker buildx version/, output
+        assert_match /docker buildx build --output=type=docker --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. 2>&1 as .*@localhost/, output
       end
     end
   end
@@ -36,6 +57,7 @@ class CliBuildTest < CliTestCase
       stub_setup
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, "--version", "&&", :docker, :buildx, "version")
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute).with { |*args| args[0..1] == [ :docker, :login ] }
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
         .with(:git, "-C", "#{Dir.tmpdir}/kamal-clones/app-#{pwd_sha}", :clone, Dir.pwd, "--recurse-submodules")
@@ -49,7 +71,7 @@ class CliBuildTest < CliTestCase
       SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:git, "-C", build_directory, :submodule, :update, "--init")
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
-        .with(:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
+        .with(:docker, :buildx, :build, "--output=type=registry", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".", "2>&1")
 
       SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
         .with(:git, "-C", anything, :"rev-parse", :HEAD)
@@ -68,13 +90,12 @@ class CliBuildTest < CliTestCase
 
   test "push without clone" do
     Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
-    hook_variables = { version: 999, service_version: "app@999", hosts: "1.1.1.1,1.1.1.2,1.1.1.3,1.1.1.4", command: "build", subcommand: "push" }
 
     run_command("push", "--verbose", fixture: :without_clone).tap do |output|
       assert_no_match /Cloning repo into build directory/, output
-      assert_hook_ran "pre-build", output, **hook_variables
+      assert_hook_ran "pre-build", output
       assert_match /docker --version && docker buildx version/, output
-      assert_match /docker buildx build --push --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile . as .*@localhost/, output
+      assert_match /docker buildx build --output=type=registry --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile . 2>&1 as .*@localhost/, output
     end
   end
 
@@ -83,6 +104,7 @@ class CliBuildTest < CliTestCase
       stub_setup
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, "--version", "&&", :docker, :buildx, "version")
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute).with { |*args| args[0..1] == [ :docker, :login ] }
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
         .with(:git, "-C", "#{Dir.tmpdir}/kamal-clones/app-#{pwd_sha}", :clone, Dir.pwd, "--recurse-submodules")
@@ -119,6 +141,9 @@ class CliBuildTest < CliTestCase
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
         .with(:docker, "--version", "&&", :docker, :buildx, "version")
 
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+        .with { |*args| args[0..1] == [ :docker, :login ] }
+
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
         .with(:docker, :buildx, :rm, "kamal-local-docker-container")
 
@@ -140,7 +165,7 @@ class CliBuildTest < CliTestCase
         .returns("")
 
       SSHKit::Backend::Abstract.any_instance.expects(:execute)
-        .with(:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".")
+        .with(:docker, :buildx, :build, "--output=type=registry", "--platform", "linux/amd64", "--builder", "kamal-local-docker-container", "-t", "dhh/app:999", "-t", "dhh/app:latest", "--label", "service=\"app\"", "--file", "Dockerfile", ".", "2>&1")
 
       run_command("push").tap do |output|
         assert_match /WARN Missing compatible builder, so creating a new one first/, output
@@ -155,7 +180,7 @@ class CliBuildTest < CliTestCase
       .raises(SSHKit::Command::Failed.new("no buildx"))
 
     Kamal::Commands::Builder.any_instance.stubs(:native_and_local?).returns(false)
-    assert_raises(Kamal::Cli::Build::BuildError) { run_command("push") }
+    assert_raises(Kamal::Cli::DependencyError) { run_command("push") }
   end
 
   test "push pre-build hook failure" do
@@ -235,6 +260,12 @@ class CliBuildTest < CliTestCase
     end
   end
 
+  test "create cloud" do
+    run_command("create", fixture: :with_cloud_builder).tap do |output|
+      assert_match /docker buildx create --driver cloud example_org\/cloud_builder/, output
+    end
+  end
+
   test "create with error" do
     stub_setup
     SSHKit::Backend::Abstract.any_instance.stubs(:execute)
@@ -252,6 +283,12 @@ class CliBuildTest < CliTestCase
     end
   end
 
+  test "remove cloud" do
+    run_command("remove", fixture: :with_cloud_builder).tap do |output|
+      assert_match /docker buildx rm cloud-example_org-cloud_builder/, output
+    end
+  end
+
   test "details" do
     SSHKit::Backend::Abstract.any_instance.stubs(:capture)
       .with(:docker, :context, :ls, "&&", :docker, :buildx, :ls)
@@ -263,9 +300,33 @@ class CliBuildTest < CliTestCase
     end
   end
 
+  test "dev" do
+    with_build_directory do |build_directory|
+      Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+
+      run_command("dev", "--verbose").tap do |output|
+        assert_no_match(/Cloning repo into build directory/, output)
+        assert_match(/docker --version && docker buildx version/, output)
+        assert_match(/docker buildx build --output=type=docker --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999-dirty -t dhh\/app:latest-dirty --label service="app" --file Dockerfile \. 2>&1 as .*@localhost/, output)
+      end
+    end
+  end
+
+  test "dev --output=local" do
+    with_build_directory do |build_directory|
+      Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+
+      run_command("dev", "--output=local", "--verbose").tap do |output|
+        assert_no_match(/Cloning repo into build directory/, output)
+        assert_match(/docker --version && docker buildx version/, output)
+        assert_match(/docker buildx build --output=type=local --platform linux\/amd64 --builder kamal-local-docker-container -t dhh\/app:999-dirty -t dhh\/app:latest-dirty --label service="app" --file Dockerfile \. 2>&1 as .*@localhost/, output)
+      end
+    end
+  end
+
   private
     def run_command(*command, fixture: :with_accessories)
-      stdouted { Kamal::Cli::Build.start([ *command, "-c", "test/fixtures/deploy_#{fixture}.yml" ]) }
+      stdouted { stderred { Kamal::Cli::Build.start([ *command, "-c", "test/fixtures/deploy_#{fixture}.yml" ]) } }
     end
 
     def stub_dependency_checks
@@ -274,17 +335,4 @@ class CliBuildTest < CliTestCase
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
         .with { |*args| args[0..1] == [ :docker, :buildx ] }
     end
-
-    def with_build_directory
-      build_directory = File.join Dir.tmpdir, "kamal-clones", "app-#{pwd_sha}", "kamal"
-      FileUtils.mkdir_p build_directory
-      FileUtils.touch File.join build_directory, "Dockerfile"
-      yield build_directory + "/"
-    ensure
-      FileUtils.rm_rf build_directory
-    end
-
-    def pwd_sha
-      Digest::SHA256.hexdigest(Dir.pwd)[0..12]
-    end
 end

test/cli/cli_test_case.rb

@@ -40,8 +40,9 @@ class CliTestCase < ActiveSupport::TestCase
         .with(:docker, :buildx, :inspect, "kamal-local-docker-container")
     end
 
-    def assert_hook_ran(hook, output, version:, service_version:, hosts:, command:, subcommand: nil, runtime: false, secrets: false)
-      assert_match %r{usr/bin/env\s\.kamal/hooks/#{hook}}, output
+    def assert_hook_ran(hook, output, count: 1)
+      regexp = ([ "/usr/bin/env .kamal/hooks/#{hook}" ] * count).join(".*")
+      assert_match /#{regexp}/m, output
     end
 
     def with_argv(*argv)
@@ -51,4 +52,17 @@ class CliTestCase < ActiveSupport::TestCase
     ensure
       ARGV.replace(old_argv)
     end
+
+    def with_build_directory
+      build_directory = File.join Dir.tmpdir, "kamal-clones", "app-#{pwd_sha}", "kamal"
+      FileUtils.mkdir_p build_directory
+      FileUtils.touch File.join build_directory, "Dockerfile"
+      yield build_directory + "/"
+    ensure
+      FileUtils.rm_rf build_directory
+    end
+
+    def pwd_sha
+      Digest::SHA256.hexdigest(Dir.pwd)[0..12]
+    end
 end

test/cli/main_test.rb

@@ -8,8 +8,7 @@ class CliMainTest < CliTestCase
     invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false }
 
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:server:bootstrap", [], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:accessory:boot", [ "all" ], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:deploy)
+    Kamal::Cli::Main.any_instance.expects(:deploy).with(boot_accessories: true)
 
     run_command("setup").tap do |output|
       assert_match /Ensure Docker is installed.../, output
@@ -22,7 +21,6 @@ class CliMainTest < CliTestCase
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:server:bootstrap", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:accessory:boot", [ "all" ], invoke_options)
     # deploy
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: true))
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:pull", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
@@ -33,7 +31,6 @@ class CliMainTest < CliTestCase
       assert_match /Ensure Docker is installed.../, output
       # deploy
       assert_match /Acquiring the deploy lock/, output
-      assert_match /Log into image registry/, output
       assert_match /Pull app image/, output
       assert_match /Ensure kamal-proxy is running/, output
       assert_match /Detect stale containers/, output
@@ -46,7 +43,6 @@ class CliMainTest < CliTestCase
     with_test_secrets("secrets" => "DB_PASSWORD=secret") do
       invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false, "verbose" => true }
 
-      Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: false))
       Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
       Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
       Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
@@ -54,17 +50,15 @@ class CliMainTest < CliTestCase
       Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:prune:all", [], invoke_options)
 
       Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
-      hook_variables = { version: 999, service_version: "app@999", hosts: "1.1.1.1,1.1.1.2", command: "deploy" }
 
       run_command("deploy", "--verbose").tap do |output|
-        assert_hook_ran "pre-connect", output, **hook_variables
-        assert_match /Log into image registry/, output
+        assert_hook_ran "pre-connect", output
         assert_match /Build and push app image/, output
-        assert_hook_ran "pre-deploy", output, **hook_variables, secrets: true
+        assert_hook_ran "pre-deploy", output
         assert_match /Ensure kamal-proxy is running/, output
         assert_match /Detect stale containers/, output
         assert_match /Prune old containers and images/, output
-        assert_hook_ran "post-deploy", output, **hook_variables, runtime: true, secrets: true
+        assert_hook_ran "post-deploy", output
       end
     end
   end
@@ -72,7 +66,6 @@ class CliMainTest < CliTestCase
   test "deploy with skip_push" do
     invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false }
 
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: true))
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:pull", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
@@ -81,7 +74,6 @@ class CliMainTest < CliTestCase
 
     run_command("deploy", "--skip_push").tap do |output|
       assert_match /Acquiring the deploy lock/, output
-      assert_match /Log into image registry/, output
       assert_match /Pull app image/, output
       assert_match /Ensure kamal-proxy is running/, output
       assert_match /Detect stale containers/, output
@@ -124,6 +116,32 @@ class CliMainTest < CliTestCase
     end
   end
 
+  test "deploy when inheriting lock" do
+    Thread.report_on_exception = false
+
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false }
+
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:boot", [], invoke_options)
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:prune:all", [], invoke_options)
+
+    Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+
+    with_kamal_lock_env do
+      KAMAL.reset
+      run_command("deploy").tap do |output|
+        assert_no_match /Acquiring the deploy lock/, output
+        assert_match /Build and push app image/, output
+        assert_match /Ensure kamal-proxy is running/, output
+        assert_match /Detect stale containers/, output
+        assert_match /Prune old containers and images/, output
+        assert_no_match /Releasing the deploy lock/, output
+      end
+    end
+  end
+
   test "deploy error when locking" do
     Thread.report_on_exception = false
 
@@ -155,11 +173,11 @@ class CliMainTest < CliTestCase
     end
   end
 
-  test "deploy errors during outside section leave remove lock" do
-    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false, :skip_local => false }
+  test "deploy errors during outside section leave remote lock" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false }
 
     Kamal::Cli::Main.any_instance.expects(:invoke)
-      .with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: false))
+      .with("kamal:cli:build:deliver", [], invoke_options)
       .raises(RuntimeError)
 
     assert_not KAMAL.holding_lock?
@@ -172,7 +190,6 @@ class CliMainTest < CliTestCase
   test "deploy with skipped hooks" do
     invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => true }
 
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: false))
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
@@ -187,7 +204,6 @@ class CliMainTest < CliTestCase
   test "deploy with missing secrets" do
     invoke_options = { "config_file" => "test/fixtures/deploy_with_secrets.yml", "version" => "999", "skip_hooks" => false }
 
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options.merge(skip_local: false))
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:boot", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true))
@@ -206,14 +222,12 @@ class CliMainTest < CliTestCase
 
     Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
 
-    hook_variables = { version: 999, service_version: "app@999", hosts: "1.1.1.1,1.1.1.2", command: "redeploy" }
-
     run_command("redeploy", "--verbose").tap do |output|
-      assert_hook_ran "pre-connect", output, **hook_variables
+      assert_hook_ran "pre-connect", output
       assert_match /Build and push app image/, output
-      assert_hook_ran "pre-deploy", output, **hook_variables
+      assert_hook_ran "pre-deploy", output
       assert_match /Running the pre-deploy hook.../, output
-      assert_hook_ran "post-deploy", output, **hook_variables, runtime: true
+      assert_hook_ran "post-deploy", output
     end
   end
 
@@ -250,7 +264,7 @@ class CliMainTest < CliTestCase
         .with(:docker, :container, :ls, "--all", "--filter", "name=^app-#{role}-123$", "--quiet")
         .returns("version-to-rollback\n").at_least_once
       SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-        .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=#{role} --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=#{role} --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-#{role}-}; done", raise_on_non_zero_exit: false)
+        .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=#{role} --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=#{role} --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-#{role}-}; done", raise_on_non_zero_exit: false)
         .returns("version-to-rollback\n").at_least_once
     end
 
@@ -259,14 +273,13 @@ class CliMainTest < CliTestCase
       .returns("running").at_least_once # health check
 
     Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
-    hook_variables = { version: 123, service_version: "app@123", hosts: "1.1.1.1,1.1.1.2,1.1.1.3,1.1.1.4", command: "rollback" }
 
     run_command("rollback", "--verbose", "123", config_file: "deploy_with_accessories").tap do |output|
-      assert_hook_ran "pre-deploy", output, **hook_variables
+      assert_hook_ran "pre-deploy", output
       assert_match "docker tag dhh/app:123 dhh/app:latest", output
       assert_match "docker run --detach --restart unless-stopped --name app-web-123", output
       assert_match "docker container ls --all --filter name=^app-web-version-to-rollback$ --quiet | xargs docker stop", output, "Should stop the container that was previously running"
-      assert_hook_ran "post-deploy", output, **hook_variables, runtime: true
+      assert_hook_ran "post-deploy", output
     end
   end
 
@@ -280,7 +293,7 @@ class CliMainTest < CliTestCase
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-123$", "--quiet")
       .returns("123").at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
+      .with(:sh, "-c", "'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting'", "|", :head, "-1", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("").at_least_once
 
     run_command("rollback", "123").tap do |output|
@@ -460,6 +473,7 @@ class CliMainTest < CliTestCase
 
   test "run an alias for a console" do
     run_command("console", config_file: "deploy_with_aliases").tap do |output|
+      assert_no_match "App Host: 1.1.1.4", output
       assert_match "docker exec app-console-999 bin/console on 1.1.1.5", output
       assert_match "App Host: 1.1.1.5", output
     end
@@ -486,6 +500,33 @@ class CliMainTest < CliTestCase
     end
   end
 
+  test "switch config file with an alias" do
+    with_config_files do
+      with_argv([ "other_config" ]) do
+        stdouted { Kamal::Cli::Main.start }.tap do |output|
+          assert_match ":service_with_version: app2-999", output
+        end
+      end
+    end
+  end
+
+  test "switch destination with an alias" do
+    with_config_files do
+      with_argv([ "other_destination_config" ]) do
+        stdouted { Kamal::Cli::Main.start }.tap do |output|
+          assert_match ":service_with_version: app3-999", output
+        end
+      end
+    end
+  end
+
+  test "run on primary via alias" do
+    run_command("primary_details", config_file: "deploy_with_aliases").tap do |output|
+      assert_match "App Host: 1.1.1.1", output
+      assert_no_match "App Host: 1.1.1.2", output
+    end
+  end
+
   test "upgrade" do
     invoke_options = { "config_file" => "test/fixtures/deploy_with_accessories.yml", "skip_hooks" => false, "confirmed" => true, "rolling" => false }
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:upgrade", [], invoke_options)
@@ -530,7 +571,28 @@ class CliMainTest < CliTestCase
       end
     end
 
+    def with_config_files
+      Dir.mktmpdir do |tmpdir|
+        config_dir = File.join(tmpdir, "config")
+        FileUtils.mkdir_p(config_dir)
+        FileUtils.cp "test/fixtures/deploy.yml", config_dir
+        FileUtils.cp "test/fixtures/deploy2.yml", config_dir
+        FileUtils.cp "test/fixtures/deploy.elsewhere.yml", config_dir
+
+        Dir.chdir(tmpdir) do
+          yield
+        end
+      end
+    end
+
     def assert_file(file, content)
       assert_match content, File.read(file)
     end
+
+    def with_kamal_lock_env
+      ENV["KAMAL_LOCK"] = "true"
+      yield
+    ensure
+      ENV.delete("KAMAL_LOCK")
+    end
 end

test/cli/proxy_test.rb

@@ -4,25 +4,26 @@ class CliProxyTest < CliTestCase
   test "boot" do
     run_command("boot").tap do |output|
       assert_match "docker login", output
-      assert_match "docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") #{KAMAL.config.proxy_image}", output
+      assert_match "mkdir -p .kamal/proxy/apps-config", output
+      assert_match "echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy", output
     end
   end
 
   test "boot old version" do
     Thread.report_on_exception = false
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :cut, "-d:", "-f2")
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
       .returns("v0.0.1")
       .at_least_once
 
     exception = assert_raises do
       run_command("boot").tap do |output|
         assert_match "docker login", output
-        assert_match "docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") #{KAMAL.config.proxy_image}", output
+        assert_match "echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy", output
       end
     end
 
-    assert_includes exception.message, "kamal-proxy version v0.0.1 is too old, please reboot to update to at least #{Kamal::Configuration::PROXY_MINIMUM_VERSION}"
+    assert_includes exception.message, "kamal-proxy version v0.0.1 is too old, run `kamal proxy reboot` in order to update to at least #{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}"
   ensure
     Thread.report_on_exception = false
   end
@@ -30,13 +31,13 @@ class CliProxyTest < CliTestCase
   test "boot correct version" do
     Thread.report_on_exception = false
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :cut, "-d:", "-f2")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
+      .returns(Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION)
       .at_least_once
 
     run_command("boot").tap do |output|
       assert_match "docker login", output
-      assert_match "docker container start kamal-proxy || docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") #{KAMAL.config.proxy_image}", output
+      assert_match "docker container start kamal-proxy || echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy", output
     end
   ensure
     Thread.report_on_exception = false
@@ -55,16 +56,16 @@ class CliProxyTest < CliTestCase
 
     run_command("reboot", "-y").tap do |output|
       assert_match "docker container stop kamal-proxy on 1.1.1.1", output
-      assert_match "Running docker container stop traefik ; docker container prune --force --filter label=org.opencontainers.image.title=Traefik && docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik on 1.1.1.1", output
       assert_match "docker container prune --force --filter label=org.opencontainers.image.title=kamal-proxy on 1.1.1.1", output
-      assert_match "docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") #{KAMAL.config.proxy_image} on 1.1.1.1", output
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target \"abcdefabcdef:80\" --deploy-timeout \"6s\" --drain-timeout \"30s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\" on 1.1.1.1", output
+      assert_match "mkdir -p .kamal/proxy/apps-config on 1.1.1.1", output
+      assert_match "echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy --volume $(pwd)/.kamal/proxy/apps-config:/home/kamal-proxy/.apps-config on 1.1.1.1", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target=\"abcdefabcdef:80\" --deploy-timeout=\"6s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\" on 1.1.1.1", output
 
       assert_match "docker container stop kamal-proxy on 1.1.1.2", output
-      assert_match "Running docker container stop traefik ; docker container prune --force --filter label=org.opencontainers.image.title=Traefik && docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik on 1.1.1.2", output
       assert_match "docker container prune --force --filter label=org.opencontainers.image.title=kamal-proxy on 1.1.1.2", output
-      assert_match "docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") #{KAMAL.config.proxy_image} on 1.1.1.2", output
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target \"abcdefabcdef:80\" --deploy-timeout \"6s\" --drain-timeout \"30s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\" on 1.1.1.2", output
+      assert_match "mkdir -p .kamal/proxy/apps-config on 1.1.1.1", output
+      assert_match "echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy --volume $(pwd)/.kamal/proxy/apps-config:/home/kamal-proxy/.apps-config on 1.1.1.2", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target=\"abcdefabcdef:80\" --deploy-timeout=\"6s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\" on 1.1.1.2", output
     end
   end
 
@@ -181,8 +182,8 @@ class CliProxyTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info).returns("12345678")
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :cut, "-d:", "-f2")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
+      .returns(Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION)
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-workers-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
@@ -198,13 +199,13 @@ class CliProxyTest < CliTestCase
       assert_match "/usr/bin/env mkdir -p .kamal", output
       assert_match "docker network create kamal", output
       assert_match "docker login -u [REDACTED] -p [REDACTED]", output
-      assert_match "docker container start kamal-proxy || docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy $(cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443\") basecamp/kamal-proxy:#{Kamal::Configuration::PROXY_MINIMUM_VERSION}", output
+      assert_match "docker container start kamal-proxy || echo $(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\") | xargs docker run --name kamal-proxy --network kamal --detach --restart unless-stopped --volume kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy", output
       assert_match "/usr/bin/env mkdir -p .kamal", output
       assert_match %r{docker rename app-web-latest app-web-latest_replaced_.*}, output
       assert_match "/usr/bin/env mkdir -p .kamal/apps/app/env/roles", output
       assert_match "Uploading \"\\n\" to .kamal/apps/app/env/roles/web.env", output
       assert_match %r{docker run --detach --restart unless-stopped --name app-web-latest --network kamal --hostname 1.1.1.1-.* -e KAMAL_CONTAINER_NAME="app-web-latest" -e KAMAL_VERSION="latest" --env-file .kamal/apps/app/env/roles/web.env --log-opt max-size="10m" --label service="app" --label role="web" --label destination dhh/app:latest}, output
-      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target \"12345678:80\" --deploy-timeout \"6s\" --drain-timeout \"30s\" --buffer-requests --buffer-responses --log-request-header \"Cache-Control\" --log-request-header \"Last-Modified\" --log-request-header \"User-Agent\"", output
+      assert_match "docker exec kamal-proxy kamal-proxy deploy app-web --target=\"12345678:80\" --deploy-timeout=\"6s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\"", output
       assert_match "docker container ls --all --filter name=^app-web-12345678$ --quiet | xargs docker stop", output
       assert_match "docker tag dhh/app:latest dhh/app:latest", output
       assert_match "/usr/bin/env mkdir -p .kamal", output
@@ -220,8 +221,8 @@ class CliProxyTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.stubs(:capture_with_info).returns("12345678")
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :cut, "-d:", "-f2")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
+      .returns(Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION)
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-workers-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
@@ -240,7 +241,10 @@ class CliProxyTest < CliTestCase
     run_command("boot_config", "set").tap do |output|
       %w[ 1.1.1.1 1.1.1.2 ].each do |host|
         assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
-        assert_match "Uploading \"--publish 80:80 --publish 443:443\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
       end
     end
   end
@@ -249,7 +253,34 @@ class CliProxyTest < CliTestCase
     run_command("boot_config", "set", "--publish", "false").tap do |output|
       %w[ 1.1.1.1 1.1.1.2 ].each do |host|
         assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
-        assert_match "Uploading \"\" to .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"--log-opt max-size=10m\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set custom max_size" do
+    run_command("boot_config", "set", "--log-max-size", "100m").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Uploading \"--publish 80:80 --publish 443:443 --log-opt max-size=100m\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set no log max size" do
+    run_command("boot_config", "set", "--log-max-size=").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Uploading \"--publish 80:80 --publish 443:443\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
       end
     end
   end
@@ -258,29 +289,117 @@ class CliProxyTest < CliTestCase
     run_command("boot_config", "set", "--http-port", "8080", "--https-port", "8443").tap do |output|
       %w[ 1.1.1.1 1.1.1.2 ].each do |host|
         assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
-        assert_match "Uploading \"--publish 8080:80 --publish 8443:443\" to .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"--publish 8080:80 --publish 8443:443 --log-opt max-size=10m\" to .kamal/proxy/options on #{host}", output
       end
     end
   end
 
+  test "boot_config set bind IP" do
+    run_command("boot_config", "set", "--publish-host-ip", "127.0.0.1").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Uploading \"--publish 127.0.0.1:80:80 --publish 127.0.0.1:443:443 --log-opt max-size=10m\" to .kamal/proxy/options on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set multiple bind IPs" do
+    run_command("boot_config", "set", "--publish-host-ip", "127.0.0.1", "--publish-host-ip", "::1").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Uploading \"--publish 127.0.0.1:80:80 --publish 127.0.0.1:443:443 --publish [::1]:80:80 --publish [::1]:443:443 --log-opt max-size=10m\" to .kamal/proxy/options on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set invalid bind IPs" do
+    exception = assert_raises do
+      run_command("boot_config", "set", "--publish-host-ip", "1.2.3.invalidIP", "--publish-host-ip", "::1")
+    end
+
+    assert_includes exception.message, "Invalid publish IP address: 1.2.3.invalidIP"
+  end
+
   test "boot_config set docker options" do
     run_command("boot_config", "set", "--docker_options", "label=foo=bar", "add_host=thishost:thathost").tap do |output|
       %w[ 1.1.1.1 1.1.1.2 ].each do |host|
         assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
-        assert_match "Uploading \"--publish 80:80 --publish 443:443 --label=foo=bar --add_host=thishost:thathost\" to .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"--publish 80:80 --publish 443:443 --log-opt max-size=10m --label=foo=bar --add_host=thishost:thathost\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set registry" do
+    run_command("boot_config", "set", "--registry", "myreg").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"myreg/basecamp/kamal-proxy\" to .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set repository" do
+    run_command("boot_config", "set", "--repository", "myrepo").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"myrepo/kamal-proxy\" to .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set image_version" do
+    run_command("boot_config", "set", "--image_version", "0.9.9").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Uploading \"0.9.9\" to .kamal/proxy/image_version on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set run_command" do
+    run_command("boot_config", "set", "--metrics_port", "9000", "--debug", "true").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Running /usr/bin/env mkdir -p .kamal/proxy on #{host}", output
+        assert_match "Uploading \"--publish 80:80 --publish 443:443 --log-opt max-size=10m --expose=9000\" to .kamal/proxy/options on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image on #{host}", output
+        assert_match "Running /usr/bin/env rm .kamal/proxy/image_version on #{host}", output
+        assert_match "Uploading \"kamal-proxy run --debug --metrics-port \\\"9000\\\"\" to .kamal/proxy/run_command on #{host}", output
+      end
+    end
+  end
+
+  test "boot_config set all" do
+    run_command("boot_config", "set", "--docker_options", "label=foo=bar", "--registry", "myreg", "--repository", "myrepo", "--image_version", "0.9.9", "--metrics_port", "9000", "--debug", "true").tap do |output|
+      %w[ 1.1.1.1 1.1.1.2 ].each do |host|
+        assert_match "Uploading \"--publish 80:80 --publish 443:443 --log-opt max-size=10m --expose=9000 --label=foo=bar\" to .kamal/proxy/options on #{host}", output
+        assert_match "Uploading \"myreg/myrepo/kamal-proxy\" to .kamal/proxy/image on #{host}", output
+        assert_match "Uploading \"0.9.9\" to .kamal/proxy/image_version on #{host}", output
+        assert_match "Uploading \"kamal-proxy run --debug --metrics-port \\\"9000\\\"\" to .kamal/proxy/run_command on #{host}", output
       end
     end
   end
 
   test "boot_config get" do
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:cat, ".kamal/proxy/options", "||", :echo, "\"--publish 80:80 --publish 443:443\"")
-      .returns("--publish 80:80 --publish 8443:443 --label=foo=bar")
+      .with(:echo, "$(cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\") $(cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"):$(cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\") $(cat .kamal/proxy/run_command 2> /dev/null || echo \"\")")
+      .returns("--publish 80:80 --publish 8443:443 --label=foo=bar basecamp/kamal-proxy:v1.0.0")
       .twice
 
     run_command("boot_config", "get").tap do |output|
-      assert_match "Host 1.1.1.1: --publish 80:80 --publish 8443:443 --label=foo=bar", output
-      assert_match "Host 1.1.1.2: --publish 80:80 --publish 8443:443 --label=foo=bar", output
+      assert_match "Host 1.1.1.1: --publish 80:80 --publish 8443:443 --label=foo=bar basecamp/kamal-proxy:v1.0.0", output
+      assert_match "Host 1.1.1.2: --publish 80:80 --publish 8443:443 --label=foo=bar basecamp/kamal-proxy:v1.0.0", output
     end
   end
 

test/cli/registry_test.rb

@@ -43,6 +43,28 @@ class CliRegistryTest < CliTestCase
     end
   end
 
+  test "login with no docker" do
+    stub_setup
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with(:docker, "--version", "&&", :docker, :buildx, "version")
+      .raises(SSHKit::Command::Failed.new("command not found"))
+
+    assert_raises(Kamal::Cli::DependencyError) { run_command("login") }
+  end
+
+  test "allow remote login with no docker" do
+    stub_setup
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with(:docker, "--version", "&&", :docker, :buildx, "version")
+      .raises(SSHKit::Command::Failed.new("command not found"))
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |*args| args[0..1] == [ :docker, :login ] }
+
+    assert_nothing_raised { run_command("login", "--skip-local") }
+  end
+
+
   private
     def run_command(*command)
       stdouted { Kamal::Cli::Registry.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }

test/cli/secrets_test.rb

@@ -7,6 +7,12 @@ class CliSecretsTest < CliTestCase
       run_command("fetch", "foo", "bar", "baz", "--account", "myaccount", "--adapter", "test")
   end
 
+  test "fetch missing --acount" do
+    assert_equal \
+      "No value provided for required options '--account'",
+      run_command("fetch", "foo", "bar", "baz", "--adapter", "test")
+  end
+
   test "extract" do
     assert_equal "oof", run_command("extract", "foo", "{\"foo\":\"oof\", \"bar\":\"rab\", \"baz\":\"zab\"}")
   end
@@ -15,6 +21,12 @@ class CliSecretsTest < CliTestCase
     assert_equal "oof", run_command("extract", "foo", "{\"abc/foo\":\"oof\", \"bar\":\"rab\", \"baz\":\"zab\"}")
   end
 
+  test "print" do
+    with_test_secrets("secrets" => "SECRET1=ABC\nSECRET2=${SECRET1}DEF\n") do
+      assert_equal "SECRET1=ABC\nSECRET2=ABCDEF", run_command("print")
+    end
+  end
+
   private
     def run_command(*command)
       stdouted { Kamal::Cli::Secrets.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }