Bump version for 2.6.0

Add a singular role

.github/workflows/ci.yml

@@ -23,12 +23,13 @@ jobs:
         run: bundle exec rubocop --parallel
   tests:
     strategy:
+      fail-fast: false
       matrix:
         ruby-version:
           - "3.1"
           - "3.2"
           - "3.3"
-          - "3.4.0-preview2"
+          - "3.4"
         gemfile:
           - Gemfile
           - gemfiles/rails_edge.gemfile
@@ -37,7 +38,6 @@ jobs:
             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:

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3-alpine
+FROM ruby:3.4-alpine
 
 # Install docker/buildx-bin
 COPY --from=docker/buildx-bin /buildx /usr/libexec/docker/cli-plugins/docker-buildx
@@ -13,9 +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.

Gemfile.lock

@@ -1,13 +1,13 @@
 PATH
   remote: .
   specs:
-    kamal (2.4.0)
+    kamal (2.6.0)
       activesupport (>= 7.0)
       base64 (~> 0.2)
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
       dotenv (~> 3.1)
-      ed25519 (~> 1.2)
+      ed25519 (~> 1.4)
       net-ssh (~> 7.3)
       sshkit (>= 1.23.0, < 2.0)
       thor (~> 1.3)
@@ -48,8 +48,6 @@ GEM
     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)
@@ -62,7 +60,7 @@ GEM
       reline (>= 0.3.8)
     dotenv (3.1.5)
     drb (2.2.1)
-    ed25519 (1.3.0)
+    ed25519 (1.4.0)
     erubi (1.13.0)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
@@ -84,11 +82,15 @@ GEM
     net-sftp (4.0.0)
       net-ssh (>= 5.0.0, < 8.0.0)
     net-ssh (7.3.0)
-    nokogiri (1.17.2-arm64-darwin)
+    nokogiri (1.18.8-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.17.2-x86_64-darwin)
+    nokogiri (1.18.8-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.17.2-x86_64-linux)
+    nokogiri (1.18.8-x86_64-darwin)
+      racc (~> 1.4)
+    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)
@@ -99,7 +101,7 @@ GEM
       date
       stringio
     racc (1.8.1)
-    rack (3.1.8)
+    rack (3.1.12)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)
@@ -172,14 +174,16 @@ GEM
     unicode-display_width (3.1.2)
       unicode-emoji (~> 4.0, >= 4.0.4)
     unicode-emoji (4.0.4)
-    uri (1.0.2)
+    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
@@ -189,4 +193,4 @@ DEPENDENCIES
   rubocop-rails-omakase
 
 BUNDLED WITH
-   2.4.3
+   2.6.5

kamal.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "thor", "~> 1.3"
   spec.add_dependency "dotenv", "~> 3.1"
   spec.add_dependency "zeitwerk", ">= 2.6.18", "< 3.0"
-  spec.add_dependency "ed25519", "~> 1.2"
+  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

@@ -1,4 +1,5 @@
 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)"
@@ -10,6 +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)
 
@@ -130,6 +141,8 @@ class Kamal::Cli::Accessory < 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"
   def exec(name, *cmd)
+    pre_connect_if_required
+
     cmd = Kamal::Utils.join_commands(cmd)
     with_accessory(name) do |accessory, hosts|
       case
@@ -139,6 +152,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
 
       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]
@@ -151,6 +165,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
       else
         say "Launching command from new container...", :magenta
         on(hosts) do |host|
+          execute *KAMAL.registry.login
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
           puts_by_host host, capture_with_info(*accessory.execute_in_new_container(cmd))
         end
@@ -275,11 +290,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     end
 
     def accessory_hosts(accessory)
-      if KAMAL.specific_hosts&.any?
+      KAMAL.accessory_hosts & accessory.hosts
-        KAMAL.specific_hosts & accessory.hosts
-      else
-        accessory.hosts
-      end
     end
 
     def remove_accessory(name)
@@ -292,7 +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|
+        host_boot_groups.each do |hosts|
-          KAMAL.roles_on(host).each do |role|
+          host_list = Array(hosts).join(",")
-            Kamal::Cli::App::Boot.new(host, role, self, version, barrier).run
+          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|
@@ -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|
@@ -96,10 +106,16 @@ class Kamal::Cli::App < Kamal::Cli::Base
   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]
@@ -115,6 +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
@@ -125,7 +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|
@@ -139,7 +156,9 @@ 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|
@@ -153,7 +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"
@@ -162,7 +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|
@@ -185,7 +204,7 @@ 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)"
@@ -221,7 +240,7 @@ class Kamal::Cli::App < Kamal::Cli::Base
     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|
@@ -241,14 +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|
@@ -262,7 +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|
@@ -276,30 +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
+  desc "remove_app_directories", "Remove the app directories from servers", hide: true
-  def remove_app_directory
+  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
@@ -340,4 +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

@@ -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

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
+    invoke :push
-    pull
+    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
+  desc "dev", "Build using the working directory, tag it as dirty, and push to local image store."
-    def verify_local_dependencies
+  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'."
-      run_locally do
+  def dev
-        begin
+    cli = self
-          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"
 
-          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(boot_accessories: true)
-        deploy
       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
@@ -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

@@ -13,9 +13,10 @@ 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)
+        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_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
@@ -23,30 +24,76 @@ class Kamal::Cli::Proxy < Kamal::Cli::Base
 
   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 :publish_host_ip, type: :string, repeatable: true, default: nil, desc: "Host IP address to bind HTTP/HTTPS traffic to. Defaults to all interfaces"
-  option :https_port, type: :numeric, default: Kamal::Configuration::PROXY_HTTPS_PORT, desc: "HTTPS port to publish on the host"
+  option :http_port, type: :numeric, default: Kamal::Configuration::Proxy::Boot::DEFAULT_HTTP_PORT, desc: "HTTP port to publish on the host"
-  option :log_max_size, type: :string, default: Kamal::Configuration::PROXY_LOG_MAX_SIZE, desc: "Max size of proxy logs"
+  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]),
-        *(KAMAL.config.proxy_logging_args(options[:log_max_size])),
+        *(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}"
@@ -67,12 +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/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

@@ -38,7 +38,7 @@ builder:
   arch: amd64
   # Pass in additional build args needed for your Dockerfile.
   # args:
-  #   RUBY_VERSION: <%= File.read('.ruby-version').strip %>
+  #   RUBY_VERSION: <%= ENV["RBENV_VERSION"] || ENV["rvm_ruby_string"] || "#{RUBY_ENGINE}-#{RUBY_ENGINE_VERSION}" %>
 
 # Inject ENV variables into containers (secrets come from .kamal/secrets).
 #
@@ -49,7 +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"

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

lib/kamal/commands/accessory.rb

@@ -4,10 +4,8 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
   attr_reader :accessory_config
   delegate :service_name, :image, :hosts, :port, :files, :directories, :cmd,
            :network_args, :publish_args, :env_args, :volume_args, :label_args, :option_args,
-           :secrets_io, :secrets_path, :env_directory, :proxy, :running_proxy?,
+           :secrets_io, :secrets_path, :env_directory, :proxy, :running_proxy?, :registry,
            to: :accessory_config
-  delegate :proxy_container_name, to: :config
-
 
   def initialize(config, name:)
     super(config)
@@ -38,11 +36,10 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
     docker :container, :stop, service_name
   end
 
-  def info
+  def info(all: false, quiet: false)
-    docker :ps, *service_filter
+    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"),
@@ -56,7 +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),
@@ -87,7 +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

@@ -1,5 +1,5 @@
 module Kamal::Commands::Accessory::Proxy
-  delegate :proxy_container_name, to: :config
+  delegate :container_name, to: :"config.proxy_boot", prefix: :proxy
 
   def deploy(target:)
     proxy_exec :deploy, service_name, *proxy.deploy_command_args(target: target)

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 ]
 

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(:container, :rm, asset_container, "2> /dev/null"), "|| true" ],
-      docker(:run, "--name", asset_container, "--detach", "--rm", "--entrypoint", "sleep", config.absolute_image, "1000000"),
+      docker(:container, :create, "--name", asset_container, config.absolute_image),
-      docker(:cp, "-L", "#{asset_container}:#{role.asset_path}/.", role.asset_extracted_directory),
+      docker(:container, :cp, "-L", "#{asset_container}:#{role.asset_path}/.", role.asset_extracted_directory),
-      docker(:stop, "-t 1", asset_container),
+      docker(:container, :rm, asset_container),
       by: "&&"
   end
 

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/proxy.rb

@@ -1,5 +1,5 @@
 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)
@@ -9,6 +9,18 @@ module Kamal::Commands::App::Proxy
     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
     def proxy_exec(*command)
       docker :exec, proxy_container_name, "kamal-proxy", *command

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 ],
+      make_run_directory,
-      append(
+      append([ :echo, escape_shell_value(audit_line(line, **details)) ], audit_log_file)
-        [ :echo, audit_tags(**details).except(:version, :service_version, :service).to_s, line ],
-        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

@@ -34,6 +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
@@ -62,6 +68,10 @@ module Kamal::Commands
         combine *commands, by: "||"
       end
 
+      def substitute(*commands)
+        "\$\(#{commands.join(" ")}\)"
+      end
+
       def xargs(command)
         [ :xargs, command ].flatten
       end
@@ -104,5 +114,13 @@ module Kamal::Commands
           " -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 :create, :remove, :dev, :push, :clean, :pull, :info, :inspect_builder, :validate_image, :first_mirror, to: :target
-  delegate :local?, :remote?, to: "config.builder"
+  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 cloud
-  def ensure_local_dependencies_installed
+    @cloud ||= Kamal::Commands::Builder::Cloud.new(config)
-    if name.native?
-      ensure_local_docker_installed
-    else
-      combine \
-        ensure_local_docker_installed,
-        ensure_local_buildx_installed
-    end
   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

@@ -13,13 +13,15 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
     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, *builder_provenance, *builder_sbom ]
+    [ *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
+    def build_tag_names(tag_as_dirty: false)
-      [ "-t", config.absolute_image, "-t", config.latest_image ]
+      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

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,
+    pipe boot_config, xargs(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
   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
+  def ensure_apps_config_directory
-    combine [ :cat, config.proxy_options_file ], [ :echo, "\"#{config.proxy_options_default.join(" ")}\"" ], by: "||"
+    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,
+      registry_config.server,
-      "-u", sensitive(Kamal::Utils.escape_shell_value(registry.username)),
+      "-u", sensitive(Kamal::Utils.escape_shell_value(registry_config.username)),
-      "-p", sensitive(Kamal::Utils.escape_shell_value(registry.password))
+      "-p", sensitive(Kamal::Utils.escape_shell_value(registry_config.password))
   end
 
-  def logout
+  def logout(registry_config: nil)
-    docker :logout, registry.server
+    registry_config ||= config.registry
+
+    docker :logout, registry_config.server
   end
 end

lib/kamal/configuration.rb

@@ -10,15 +10,10 @@ 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 = "v0.8.4"
-  PROXY_HTTP_PORT = 80
-  PROXY_HTTPS_PORT = 443
-  PROXY_LOG_MAX_SIZE = "10m"
-
   class << self
     def create_from(config_file:, destination: nil, version: nil)
       ENV["KAMAL_DESTINATION"] = destination
@@ -59,7 +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) ] } || {}
@@ -68,7 +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)
 
@@ -82,7 +78,6 @@ class Kamal::Configuration
     ensure_unique_hosts_for_ssl_roles
   end
 
-
   def version=(version)
     @declared_version = version
   end
@@ -106,6 +101,9 @@ class Kamal::Configuration
     raw_config.minimum_version
   end
 
+  def service_and_destination
+    [ service, destination ].compact.join("-")
+  end
 
   def roles
     servers.roles
@@ -119,11 +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
@@ -148,8 +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
@@ -180,7 +185,6 @@ class Kamal::Configuration
     raw_config.retain_containers || 5
   end
 
-
   def volume_args
     if raw_config.volumes.present?
       argumentize "--volume", raw_config.volumes
@@ -193,7 +197,6 @@ class Kamal::Configuration
     logging.args
   end
 
-
   def readiness_delay
     raw_config.readiness_delay || 7
   end
@@ -206,7 +209,6 @@ class Kamal::Configuration
     raw_config.drain_timeout || 30
   end
 
-
   def run_directory
     ".kamal"
   end
@@ -216,7 +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
@@ -227,7 +229,6 @@ class Kamal::Configuration
     File.join app_directory, "assets"
   end
 
-
   def hooks_path
     raw_config.hooks_path || ".kamal/hooks"
   end
@@ -236,6 +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"])
@@ -249,35 +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_logging_args(max_size)
-    argumentize "--log-opt", "max-size=#{max_size}" if max_size.present?
-  end
-
-  def proxy_options_default
-    [ *proxy_publish_args(PROXY_HTTP_PORT, PROXY_HTTPS_PORT), *proxy_logging_args(PROXY_LOG_MAX_SIZE) ]
-  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,
@@ -307,22 +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?
+      if raw_config.servers.nil?
-        raise Kamal::ConfigurationError, "The primary_role #{primary_role_name} isn't defined"
+        raise Kamal::ConfigurationError, "No servers or accessories specified" unless raw_config.accessories.present?
-      end
+      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?
+        if primary_role.hosts.empty?
-        raise Kamal::ConfigurationError, "No servers specified for the #{primary_role.name} primary_role"
+          raise Kamal::ConfigurationError, "No servers specified for the #{primary_role.name} primary_role"
-      end
+        end
 
-      unless allow_empty_roles?
+        unless allow_empty_roles?
-        roles.each do |role|
+          roles.each do |role|
-          if role.hosts.empty?
+            if role.hosts.empty?
-            raise Kamal::ConfigurationError, "No servers specified for the #{role.name} role. You can ignore this with allow_empty_roles: true"
+              raise Kamal::ConfigurationError, "No servers specified for the #{role.name} role. You can ignore this with allow_empty_roles: true"
+            end
           end
         end
       end

lib/kamal/configuration/accessory.rb

@@ -5,7 +5,7 @@ class Kamal::Configuration::Accessory
 
   delegate :argumentize, :optionize, to: Kamal::Utils
 
-  attr_reader :name, :accessory_config, :env, :proxy
+  attr_reader :name, :env, :proxy, :registry
 
   def initialize(name, config:)
     @name, @config, @accessory_config = name.inquiry, config, config.raw_config["accessories"][name]
@@ -16,12 +16,11 @@ class Kamal::Configuration::Accessory
       context: "accessories/#{name}",
       with: Kamal::Configuration::Validator::Accessory
 
-    @env = Kamal::Configuration::Env.new \
+    ensure_valid_roles
-      config: accessory_config.fetch("env", {}),
-      secrets: config.secrets,
-      context: "accessories/#{name}/env"
 
-    initialize_proxy if running_proxy?
+    @env = initialize_env
+    @proxy = initialize_proxy if running_proxy?
+    @registry = initialize_registry if accessory_config["registry"].present?
   end
 
   def service_name
@@ -29,11 +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
@@ -109,18 +108,32 @@ class Kamal::Configuration::Accessory
   end
 
   def running_proxy?
-    @accessory_config["proxy"].present?
+    accessory_config["proxy"].present?
-  end
-
-  def initialize_proxy
-    @proxy = Kamal::Configuration::Proxy.new \
-      config: config,
-      proxy_config: accessory_config["proxy"],
-      context: "accessories/#{name}/proxy"
   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 }
@@ -188,9 +201,27 @@ class Kamal::Configuration::Accessory
     end
 
     def hosts_from_roles
-      if accessory_config.key?("roles")
+      if accessory_config.key?("role")
-        accessory_config["roles"].flat_map do |role|
+       config.role(accessory_config["role"])&.hosts
-          config.role(role)&.hosts || raise(Kamal::ConfigurationError, "Unknown role in accessories config: '#{role}'")
+      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
@@ -198,4 +229,12 @@ class Kamal::Configuration::Accessory
     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

lib/kamal/configuration/docs/accessory.yml

@@ -23,18 +23,41 @@ accessories:
 
     # Image
     #
-    # The Docker image to use, prefix it 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
     #
@@ -100,5 +123,6 @@ accessories:
 
     # Proxy
     #
+    # You can run your accessory behind the Kamal proxy. See kamal docs proxy for more information
     proxy:
       ...

lib/kamal/configuration/docs/builder.yml

@@ -102,6 +102,9 @@ builder:
   #
   # 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
   #

lib/kamal/configuration/docs/configuration.yml

@@ -82,6 +82,12 @@ asset_path: /path/to/assets
 # 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`:

lib/kamal/configuration/docs/env.yml

@@ -51,6 +51,37 @@ env:
   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.

lib/kamal/configuration/docs/proxy.yml

@@ -52,6 +52,13 @@ proxy:
   # 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.

lib/kamal/configuration/env.rb

@@ -1,8 +1,7 @@
 class Kamal::Configuration::Env
   include Kamal::Configuration::Validation
 
-  attr_reader :context, :secrets
+  attr_reader :context, :clear, :secret_keys
-  attr_reader :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

@@ -42,8 +42,10 @@ 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
 
@@ -51,6 +53,17 @@ class Kamal::Configuration::Proxy
     optionize ({ target: "#{target}:#{app_port}" }).merge(deploy_options), with: "="
   end
 
+  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)
     self.class.new config: config, proxy_config: proxy_config.deep_merge(other.proxy_config)
   end
@@ -59,4 +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:, secrets:, context: "registry")
-
+    @registry_config = config["registry"] || {}
-  def initialize(config:)
+    @secrets = secrets
-    @registry_config = config.raw_config.registry || {}
+    validate! registry_config, context: context, with: Kamal::Configuration::Validator::Registry
-    @secrets = config.secrets
-    validate! registry_config, 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)
+      @specializations ||= role_config.is_a?(Array) ? {} : role_config
-        {}
+    end
-      else
+
-        config.raw_config.servers[name]
+    def role_config
-      end
+      @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
+    if (config.keys & [ "host", "hosts", "role", "roles", "tag", "tags" ]).size != 1
-      error "specify one of `host`, `hosts` or `roles`"
+      error "specify one of `host`, `hosts`, `role`, `roles`, `tag` or `tags`"
     end
+
+    validate_docker_options!(config["options"])
   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/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/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

@@ -1,12 +1,16 @@
 class Kamal::Secrets::Adapters::AwsSecretsManager < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
   private
     def login(_account)
       nil
     end
 
-    def fetch_secrets(secrets, account:, session:)
+    def fetch_secrets(secrets, from:, account: nil, session:)
       {}.tap do |results|
-        get_from_secrets_manager(secrets, account: account).each do |secret|
+        get_from_secrets_manager(prefixed_secrets(secrets, from: from), account: account).each do |secret|
           secret_name = secret["Name"]
           secret_string = JSON.parse(secret["SecretString"])
 
@@ -19,8 +23,13 @@ class Kamal::Secrets::Adapters::AwsSecretsManager < Kamal::Secrets::Adapters::Ba
       end
     end
 
-    def get_from_secrets_manager(secrets, account:)
+    def get_from_secrets_manager(secrets, account: nil)
-      `aws secretsmanager batch-get-secret-value --secret-id-list #{secrets.map(&:shellescape).join(" ")} --profile #{account.shellescape}`.tap do |secrets|
+      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)

lib/kamal/secrets/adapters/base.rb

@@ -7,8 +7,7 @@ class Kamal::Secrets::Adapters::Base
     check_dependencies!
 
     session = login(account)
-    full_secrets = secrets.map { |secret| [ from, secret ].compact.join("/") }
+    fetch_secrets(secrets, from: from, account: account, session: session)
-    fetch_secrets(full_secrets, account: account, session: session)
   end
 
   def requires_account?
@@ -27,4 +26,8 @@ class Kamal::Secrets::Adapters::Base
     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

@@ -21,9 +21,9 @@ 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 #{item} from Bitwarden" unless $?.success?
           item_json = JSON.parse(item_json)

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

@@ -16,8 +16,21 @@ class Kamal::Secrets::Adapters::Doppler < Kamal::Secrets::Adapters::Base
       $?.success?
     end
 
-    def fetch_secrets(secrets, **)
+    def fetch_secrets(secrets, from:, **)
-      project_and_config_flags = ""
+      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("/")
 
@@ -27,15 +40,6 @@ class Kamal::Secrets::Adapters::Doppler < Kamal::Secrets::Adapters::Base
 
         project_and_config_flags = "-p #{project.shellescape} -c #{config.shellescape}"
       end
-
-      secret_names = secrets.collect { |s| s.split("/").last }
-
-      items = `doppler secrets get #{secret_names.map(&:shellescape).join(" ")} --json #{project_and_config_flags}`
-      raise RuntimeError, "Could not read #{secrets} from Doppler" unless $?.success?
-
-      items = JSON.parse(items)
-
-      items.transform_values { |value| value["computed"] }
     end
 
     def service_token_set?

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?
 
@@ -23,7 +24,7 @@ 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

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?

lib/kamal/secrets/adapters/test.rb

@@ -4,8 +4,8 @@ class Kamal::Secrets::Adapters::Test < Kamal::Secrets::Adapters::Base
       true
     end
 
-    def fetch_secrets(secrets, account:, session:)
+    def fetch_secrets(secrets, from:, account:, session:)
-      secrets.to_h { |secret| [ secret, secret.reverse ] }
+      prefixed_secrets(secrets, from: from).to_h { |secret| [ secret, secret.reverse ] }
     end
 
     def check_dependencies!

lib/kamal/secrets/adapters/test_optional_account.rb

@@ -1,5 +0,0 @@
-class Kamal::Secrets::Adapters::TestOptionalAccount < Kamal::Secrets::Adapters::Test
-  def requires_account?
-    false
-  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/version.rb

@@ -1,3 +1,3 @@
 module Kamal
-  VERSION = "2.4.0"
+  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 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\" 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
     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 private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.3", output
-      assert_match /docker login.*on 1.1.1.1/, output
+      assert_match "docker login private.registry -u [REDACTED] -p [REDACTED] 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 1.1.1.2", 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_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.1", output
-      assert_no_match /docker login.*on 1.1.1.2/, 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_match "docker login private.registry -u [REDACTED] -p [REDACTED] on 1.1.1.1", output
-      assert_no_match /docker login.*on 1.1.1.3/, 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

@@ -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").twice
-    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", "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
@@ -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
@@ -185,6 +192,34 @@ 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
 
@@ -237,9 +272,11 @@ class CliAppTest < CliTestCase
 
   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=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(docker image ls --filter reference=dhh/app:latest --format '\\''{{.ID}}'\\'') ; docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting' | head -1 | xargs docker stop")}/, output
+      assert_match "sh -c 'docker ps --latest --quiet --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(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 /#{Regexp.escape("docker container prune --force --filter label=service=app")}/, output
+      assert_match "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 "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
 
@@ -261,12 +298,27 @@ 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 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 --log-opt max-size=\"10m\" dhh/app:latest ruby -v", output
@@ -305,18 +357,25 @@ class CliAppTest < CliTestCase
   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 --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=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
@@ -382,8 +441,10 @@ class CliAppTest < CliTestCase
 
 
   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|
+    with_argv([ "app", "version", "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1" ]) do
-      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 ${line#app-web-}; done", output
+      stdouted { Kamal::Cli::Main.start }.tap do |output|
+        assert_match "sh -c 'docker ps --latest --format '\\''{{.Names}}'\\'' --filter label=service=app --filter label=destination= --filter label=role=web --filter status=running --filter status=restarting --filter ancestor=$(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
 
@@ -428,6 +489,24 @@ class CliAppTest < CliTestCase
     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
+
   private
     def run_command(*command, config: :with_accessories, host: "1.1.1.1", allow_execute_error: false)
       stdouted do

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)
+    def assert_hook_ran(hook, output, count: 1)
-      assert_match %r{usr/bin/env\s\.kamal/hooks/#{hook}}, output
+      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).with(boot_accessories: true)
-    Kamal::Cli::Main.any_instance.expects(:deploy)
 
     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_hook_ran "pre-connect", output
-        assert_match /Log into image registry/, 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
+  test "deploy errors during outside section leave remote lock" do
-    invoke_options = { "config_file" => "test/fixtures/deploy_simple.yml", "version" => "999", "skip_hooks" => false, :skip_local => 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: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
 
@@ -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
 
@@ -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 --log-opt max-size=10m\") #{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 --log-opt max-size=10m\") #{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, run `kamal proxy reboot` in order 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")
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .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 --log-opt max-size=10m\") #{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
@@ -55,15 +56,15 @@ 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 --log-opt max-size=10m\") #{KAMAL.config.proxy_image} 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 --log-opt max-size=10m\") #{KAMAL.config.proxy_image} 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")
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .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}}'")
@@ -198,7 +199,7 @@ 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 --log-opt max-size=10m\") 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
@@ -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")
+      .with(:docker, :inspect, "kamal-proxy", "--format '{{.Config.Image}}'", "|", :awk, "-F:", "'{print $NF}'")
-      .returns(Kamal::Configuration::PROXY_MINIMUM_VERSION)
+      .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 --log-opt max-size=10m\" 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
@@ -250,6 +254,9 @@ class CliProxyTest < CliTestCase
       %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 \"--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
@@ -259,6 +266,9 @@ class CliProxyTest < CliTestCase
       %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
@@ -268,6 +278,9 @@ class CliProxyTest < CliTestCase
       %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
@@ -281,24 +294,112 @@ class CliProxyTest < CliTestCase
     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 --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 --log-opt max-size=10m\"")
+      .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")
+      .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 1.1.1.1: --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", 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

@@ -13,12 +13,6 @@ class CliSecretsTest < CliTestCase
       run_command("fetch", "foo", "bar", "baz", "--adapter", "test")
   end
 
-  test "fetch without required --account" do
-    assert_equal \
-      "\\{\\\"foo\\\":\\\"oof\\\",\\\"bar\\\":\\\"rab\\\",\\\"baz\\\":\\\"zab\\\"\\}",
-      run_command("fetch", "foo", "bar", "baz", "--adapter", "test_optional_account")
-  end
-
   test "extract" do
     assert_equal "oof", run_command("extract", "foo", "{\"foo\":\"oof\", \"bar\":\"rab\", \"baz\":\"zab\"}")
   end

test/commander_test.rb

@@ -104,28 +104,6 @@ class CommanderTest < ActiveSupport::TestCase
     assert_equal [ "web", "workers" ], @kamal.roles_on("1.1.1.1").map(&:name)
   end
 
-  test "default group strategy" do
-    assert_empty @kamal.boot_strategy
-  end
-
-  test "specific limit group strategy" do
-    configure_with(:deploy_with_boot_strategy)
-
-    assert_equal({ in: :groups, limit: 3, wait: 2 }, @kamal.boot_strategy)
-  end
-
-  test "percentage-based group strategy" do
-    configure_with(:deploy_with_percentage_boot_strategy)
-
-    assert_equal({ in: :groups, limit: 1, wait: 2 }, @kamal.boot_strategy)
-  end
-
-  test "percentage-based group strategy limit is at least 1" do
-    configure_with(:deploy_with_low_percentage_boot_strategy)
-
-    assert_equal({ in: :groups, limit: 1, wait: 2 }, @kamal.boot_strategy)
-  end
-
   test "try to match the primary role from a list of specific roles" do
     configure_with(:deploy_primary_web_role_override)
 

test/commands/accessory_test.rb

@@ -5,7 +5,9 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
     setup_test_secrets("secrets" => "MYSQL_ROOT_PASSWORD=secret123")
 
     @config = {
-      service: "app", image: "dhh/app", registry: { "server" => "private.registry", "username" => "dhh", "password" => "secret" },
+      service: "app",
+      image: "dhh/app",
+      registry: { "server" => "private.registry", "username" => "dhh", "password" => "secret" },
       servers: [ "1.1.1.1" ],
       builder: { "arch" => "amd64" },
       accessories: {
@@ -39,6 +41,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
         "busybox" => {
           "service" => "custom-busybox",
           "image" => "busybox:latest",
+          "registry" => { "server" => "other.registry", "username" => "user", "password" => "pw" },
           "host" => "1.1.1.7",
           "proxy" => {
             "host" => "busybox.example.com"
@@ -62,7 +65,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
       new_command(:redis).run.join(" ")
 
     assert_equal \
-      "docker run --name custom-busybox --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --env-file .kamal/apps/app/env/accessories/busybox.env --label service=\"custom-busybox\" busybox:latest",
+      "docker run --name custom-busybox --detach --restart unless-stopped --network kamal --log-opt max-size=\"10m\" --env-file .kamal/apps/app/env/accessories/busybox.env --label service=\"custom-busybox\" other.registry/busybox:latest",
       new_command(:busybox).run.join(" ")
   end
 
@@ -70,7 +73,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
     @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
 
     assert_equal \
-      "docker run --name custom-busybox --detach --restart unless-stopped --network kamal --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --env-file .kamal/apps/app/env/accessories/busybox.env --label service=\"custom-busybox\" busybox:latest",
+      "docker run --name custom-busybox --detach --restart unless-stopped --network kamal --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --env-file .kamal/apps/app/env/accessories/busybox.env --label service=\"custom-busybox\" other.registry/busybox:latest",
       new_command(:busybox).run.join(" ")
   end
 
@@ -100,7 +103,6 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
       new_command(:mysql).info.join(" ")
   end
 
-
   test "execute in new container" do
     assert_equal \
       "docker run --rm --network kamal --env MYSQL_ROOT_HOST=\"%\" --env-file .kamal/apps/app/env/accessories/mysql.env private.registry/mysql:8.0 mysql -u root",
@@ -127,8 +129,6 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
     end
   end
 
-
-
   test "logs" do
     assert_equal \
       "docker logs app-mysql --timestamps 2>&1",

test/commands/app_test.rb

@@ -469,10 +469,10 @@ class CommandsAppTest < ActiveSupport::TestCase
   test "extract assets" do
     assert_equal [
       :mkdir, "-p", ".kamal/apps/app/assets/extracted/web-999", "&&",
-      :docker, :stop, "-t 1", "app-web-assets", "2> /dev/null", "|| true", "&&",
+      :docker, :container, :rm, "app-web-assets", "2> /dev/null", "|| true", "&&",
-      :docker, :run, "--name", "app-web-assets", "--detach", "--rm", "--entrypoint", "sleep", "dhh/app:999", "1000000", "&&",
+      :docker, :container, :create, "--name", "app-web-assets", "dhh/app:999", "&&",
-      :docker, :cp, "-L", "app-web-assets:/public/assets/.", ".kamal/apps/app/assets/extracted/web-999", "&&",
+      :docker, :container, :cp, "-L", "app-web-assets:/public/assets/.", ".kamal/apps/app/assets/extracted/web-999", "&&",
-      :docker, :stop, "-t 1", "app-web-assets"
+      :docker, :container, :rm, "app-web-assets"
     ], new_command(asset_path: "/public/assets").extract_assets
   end
 
@@ -497,6 +497,30 @@ class CommandsAppTest < ActiveSupport::TestCase
     ], new_command(asset_path: "/public/assets").clean_up_assets
   end
 
+  test "live" do
+    assert_equal \
+      "docker exec kamal-proxy kamal-proxy resume app-web",
+      new_command.live.join(" ")
+  end
+
+  test "maintenance" do
+    assert_equal \
+      "docker exec kamal-proxy kamal-proxy stop app-web",
+      new_command.maintenance.join(" ")
+  end
+
+  test "maintenance with options" do
+    assert_equal \
+      "docker exec kamal-proxy kamal-proxy stop app-web --drain-timeout=\"10s\" --message=\"Hi\"",
+      new_command.maintenance(drain_timeout: 10, message: "Hi").join(" ")
+  end
+
+  test "remove_proxy_app_directory" do
+    assert_equal \
+      "rm -r .kamal/proxy/apps-config/app",
+      new_command.remove_proxy_app_directory.join(" ")
+  end
+
   private
     def new_command(role: "web", host: "1.1.1.1", **additional_config)
       config = Kamal::Configuration.new(@config.merge(additional_config), destination: @destination, version: "999")

test/commands/auditor_test.rb

@@ -20,8 +20,7 @@ class CommandsAuditorTest < ActiveSupport::TestCase
     assert_equal [
       :mkdir, "-p", ".kamal", "&&",
       :echo,
-      "[#{@recorded_at}] [#{@performer}]",
+      "\"[#{@recorded_at}] [#{@performer}] app removed container\"",
-      "app removed container",
       ">>", ".kamal/app-audit.log"
     ], @auditor.record("app removed container")
   end
@@ -31,8 +30,7 @@ class CommandsAuditorTest < ActiveSupport::TestCase
       assert_equal [
         :mkdir, "-p", ".kamal", "&&",
         :echo,
-        "[#{@recorded_at}] [#{@performer}] [staging]",
+        "\"[#{@recorded_at}] [#{@performer}] [staging] app removed container\"",
-        "app removed container",
         ">>", ".kamal/app-staging-audit.log"
       ], auditor.record("app removed container")
     end
@@ -43,8 +41,7 @@ class CommandsAuditorTest < ActiveSupport::TestCase
       assert_equal [
         :mkdir, "-p", ".kamal", "&&",
         :echo,
-        "[#{@recorded_at}] [#{@performer}] [web]",
+        "\"[#{@recorded_at}] [#{@performer}] [web] app removed container\"",
-        "app removed container",
         ">>", ".kamal/app-audit.log"
       ], auditor.record("app removed container")
     end
@@ -54,8 +51,7 @@ class CommandsAuditorTest < ActiveSupport::TestCase
     assert_equal [
       :mkdir, "-p", ".kamal", "&&",
       :echo,
-      "[#{@recorded_at}] [#{@performer}] [value]",
+      "\"[#{@recorded_at}] [#{@performer}] [value] app removed container\"",
-      "app removed container",
       ">>", ".kamal/app-audit.log"
     ], @auditor.record("app removed container", detail: "value")
   end

test/commands/builder_test.rb

@@ -9,7 +9,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "cache" => { "type" => "gha" } })
     assert_equal "local", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -17,7 +17,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "arch" => [ "amd64" ] })
     assert_equal "local", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -25,7 +25,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "cache" => { "type" => "gha" } })
     assert_equal "local", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -33,7 +33,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "arch" => [ "amd64", "arm64" ], "remote" => "ssh://app@127.0.0.1", "cache" => { "type" => "gha" } })
     assert_equal "hybrid", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-hybrid-docker-container-ssh---app-127-0-0-1 -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64,linux/arm64 --builder kamal-hybrid-docker-container-ssh---app-127-0-0-1 -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -41,7 +41,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "arch" => [ "amd64", "arm64" ], "remote" => "ssh://app@127.0.0.1", "cache" => { "type" => "gha" }, "local" => false })
     assert_equal "remote", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-remote-ssh---app-127-0-0-1 -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64,linux/arm64 --builder kamal-remote-ssh---app-127-0-0-1 -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -49,7 +49,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "arch" => [ "#{remote_arch}" ], "remote" => "ssh://app@host", "cache" => { "type" => "gha" } })
     assert_equal "remote", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/#{remote_arch} --builder kamal-remote-ssh---app-host -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/#{remote_arch} --builder kamal-remote-ssh---app-host -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -57,14 +57,22 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "arch" => [ "#{local_arch}" ], "remote" => "ssh://app@host", "cache" => { "type" => "gha" } })
     assert_equal "local", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/#{local_arch} --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/#{local_arch} --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile . 2>&1",
+      builder.push.join(" ")
+  end
+
+  test "cloud builder" do
+    builder = new_builder_command(builder: { "arch" => [ "#{local_arch}" ], "driver" => "cloud docker-org-name/builder-name" })
+    assert_equal "cloud", builder.name
+    assert_equal \
+      "docker buildx build --output=type=registry --platform linux/#{local_arch} --builder cloud-docker-org-name-builder-name -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
   test "build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
     assert_equal \
-      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile",
+      "--label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile",
       builder.target.build_options.join(" ")
   end
 
@@ -73,7 +81,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
       FileUtils.touch("Dockerfile")
       builder = new_builder_command(builder: { "secrets" => [ "token_a", "token_b" ] })
       assert_equal \
-        "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"token_a\" --secret id=\"token_b\" --file Dockerfile",
+        "--label service=\"app\" --secret id=\"token_a\" --secret id=\"token_b\" --file Dockerfile",
         builder.target.build_options.join(" ")
     end
   end
@@ -82,7 +90,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     Pathname.any_instance.expects(:exist?).returns(true).once
     builder = new_builder_command(builder: { "dockerfile" => "Dockerfile.xyz" })
     assert_equal \
-      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile.xyz",
+      "--label service=\"app\" --file Dockerfile.xyz",
       builder.target.build_options.join(" ")
   end
 
@@ -97,21 +105,21 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   test "build target" do
     builder = new_builder_command(builder: { "target" => "prod" })
     assert_equal \
-      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --target prod",
+      "--label service=\"app\" --file Dockerfile --target prod",
       builder.target.build_options.join(" ")
   end
 
   test "build context" do
     builder = new_builder_command(builder: { "context" => ".." })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ..",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile .. 2>&1",
       builder.push.join(" ")
   end
 
   test "push with build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile . 2>&1",
       builder.push.join(" ")
   end
 
@@ -120,7 +128,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
       FileUtils.touch("Dockerfile")
       builder = new_builder_command(builder: { "secrets" => [ "a", "b" ] })
       assert_equal \
-        "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"a\" --secret id=\"b\" --file Dockerfile .",
+        "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"a\" --secret id=\"b\" --file Dockerfile . 2>&1",
         builder.push.join(" ")
     end
   end
@@ -129,7 +137,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "ssh" => "default=$SSH_AUTH_SOCK" })
 
     assert_equal \
-      "-t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --ssh default=$SSH_AUTH_SOCK",
+      "--label service=\"app\" --file Dockerfile --ssh default=$SSH_AUTH_SOCK",
       builder.target.build_options.join(" ")
   end
 
@@ -140,35 +148,35 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   test "context build" do
     builder = new_builder_command(builder: { "context" => "./foo" })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ./foo",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ./foo 2>&1",
       builder.push.join(" ")
   end
 
   test "push with provenance" do
     builder = new_builder_command(builder: { "provenance" => "mode=max" })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --provenance mode=max .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --provenance mode=max . 2>&1",
       builder.push.join(" ")
   end
 
   test "push with provenance false" do
     builder = new_builder_command(builder: { "provenance" => false })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --provenance false .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --provenance false . 2>&1",
       builder.push.join(" ")
   end
 
   test "push with sbom" do
     builder = new_builder_command(builder: { "sbom" => true })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom true .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom true . 2>&1",
       builder.push.join(" ")
   end
 
   test "push with sbom false" do
     builder = new_builder_command(builder: { "sbom" => false })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom false .",
+      "docker buildx build --output=type=registry --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom false . 2>&1",
       builder.push.join(" ")
   end
 

test/commands/proxy_test.rb

@@ -15,7 +15,7 @@ class CommandsProxyTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      "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 --log-opt max-size=10m\") basecamp/kamal-proxy:#{Kamal::Configuration::PROXY_MINIMUM_VERSION}",
+      "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",
       new_command.run.join(" ")
   end
 
@@ -23,7 +23,7 @@ class CommandsProxyTest < ActiveSupport::TestCase
     @config.delete(:proxy)
 
     assert_equal \
-      "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 --log-opt max-size=10m\") basecamp/kamal-proxy:#{Kamal::Configuration::PROXY_MINIMUM_VERSION}",
+      "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",
       new_command.run.join(" ")
   end
 
@@ -101,7 +101,7 @@ class CommandsProxyTest < ActiveSupport::TestCase
 
   test "version" do
     assert_equal \
-      "docker inspect kamal-proxy --format '{{.Config.Image}}' | cut -d: -f2",
+      "docker inspect kamal-proxy --format '{{.Config.Image}}' | awk -F: '{print $NF}'",
       new_command.version.join(" ")
   end
 
@@ -111,10 +111,28 @@ class CommandsProxyTest < ActiveSupport::TestCase
       new_command.ensure_proxy_directory.join(" ")
   end
 
-  test "get_boot_options" do
+  test "read_boot_options" do
     assert_equal \
-      "cat .kamal/proxy/options || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\"",
+      "cat .kamal/proxy/options 2> /dev/null || echo \"--publish 80:80 --publish 443:443 --log-opt max-size=10m\"",
-      new_command.get_boot_options.join(" ")
+      new_command.read_boot_options.join(" ")
+  end
+
+  test "read_image" do
+    assert_equal \
+      "cat .kamal/proxy/image 2> /dev/null || echo \"basecamp/kamal-proxy\"",
+      new_command.read_image.join(" ")
+  end
+
+  test "read_image_version" do
+    assert_equal \
+      "cat .kamal/proxy/image_version 2> /dev/null || echo \"#{Kamal::Configuration::Proxy::Boot::MINIMUM_VERSION}\"",
+      new_command.read_image_version.join(" ")
+  end
+
+  test "read_run_command" do
+    assert_equal \
+      "cat .kamal/proxy/run_command 2> /dev/null || echo \"\"",
+      new_command.read_run_command.join(" ")
   end
 
   test "reset_boot_options" do
@@ -123,6 +141,30 @@ class CommandsProxyTest < ActiveSupport::TestCase
       new_command.reset_boot_options.join(" ")
   end
 
+  test "reset_image" do
+    assert_equal \
+      "rm .kamal/proxy/image",
+      new_command.reset_image.join(" ")
+  end
+
+  test "reset_image_version" do
+    assert_equal \
+      "rm .kamal/proxy/image_version",
+      new_command.reset_image_version.join(" ")
+  end
+
+  test "ensure_apps_config_directory" do
+    assert_equal \
+      "mkdir -p .kamal/proxy/apps-config",
+      new_command.ensure_apps_config_directory.join(" ")
+  end
+
+  test "reset_run_command" do
+    assert_equal \
+      "rm .kamal/proxy/run_command",
+      new_command.reset_run_command.join(" ")
+  end
+
   private
     def new_command
       Kamal::Commands::Proxy.new(Kamal::Configuration.new(@config, version: "123"))

test/commands/registry_test.rb

@@ -2,14 +2,27 @@ require "test_helper"
 
 class CommandsRegistryTest < ActiveSupport::TestCase
   setup do
-    @config = { service: "app",
+    @config = {
+      service: "app",
       image: "dhh/app",
-      registry: { "username" => "dhh",
+      registry: {
+        "username" => "dhh",
         "password" => "secret",
         "server" => "hub.docker.com"
       },
       builder: { "arch" => "amd64" },
-      servers: [ "1.1.1.1" ]
+      servers: [ "1.1.1.1" ],
+      accessories: {
+        "db" => {
+          "image" => "mysql:8.0",
+          "hosts" => [ "1.1.1.1" ],
+          "registry" => {
+            "username" => "user",
+            "password" => "pw",
+            "server" => "other.hub.docker.com"
+          }
+        }
+      }
     }
   end
 
@@ -19,13 +32,24 @@ class CommandsRegistryTest < ActiveSupport::TestCase
       registry.login.join(" ")
   end
 
+  test "given registry login" do
+    assert_equal \
+      "docker login other.hub.docker.com -u \"user\" -p \"pw\"",
+      registry.login(registry_config: accessory_registry_config).join(" ")
+  end
+
   test "registry login with ENV password" do
-    with_test_secrets("secrets" => "KAMAL_REGISTRY_PASSWORD=more-secret") do
+    with_test_secrets("secrets" => "KAMAL_REGISTRY_PASSWORD=more-secret\nKAMAL_MYSQL_REGISTRY_PASSWORD=secret-pw") do
       @config[:registry]["password"] = [ "KAMAL_REGISTRY_PASSWORD" ]
+      @config[:accessories]["db"]["registry"]["password"] = [ "KAMAL_MYSQL_REGISTRY_PASSWORD" ]
 
       assert_equal \
         "docker login hub.docker.com -u \"dhh\" -p \"more-secret\"",
         registry.login.join(" ")
+
+      assert_equal \
+        "docker login other.hub.docker.com -u \"user\" -p \"secret-pw\"",
+        registry.login(registry_config: accessory_registry_config).join(" ")
     end
   end
 
@@ -55,8 +79,22 @@ class CommandsRegistryTest < ActiveSupport::TestCase
       registry.logout.join(" ")
   end
 
+  test "given registry logout" do
+    assert_equal \
+      "docker logout other.hub.docker.com",
+      registry.logout(registry_config: accessory_registry_config).join(" ")
+  end
+
   private
     def registry
-      Kamal::Commands::Registry.new Kamal::Configuration.new(@config)
+      Kamal::Commands::Registry.new main_config
+    end
+
+    def main_config
+      Kamal::Configuration.new(@config)
+    end
+
+    def accessory_registry_config
+      main_config.accessory("db").registry
     end
 end

test/configuration/accessory_test.rb

@@ -3,16 +3,18 @@ require "test_helper"
 class ConfigurationAccessoryTest < ActiveSupport::TestCase
   setup do
     @deploy = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" },
+      service: "app",
+      image: "dhh/app",
+      registry: { "username" => "dhh", "password" => "secret" },
       servers: {
-        "web" => [ "1.1.1.1", "1.1.1.2" ],
+        "web" => [ { "1.1.1.1" => "writer" }, { "1.1.1.2" => "reader" } ],
-        "workers" => [ "1.1.1.3", "1.1.1.4" ]
+        "workers" => [ { "1.1.1.3" => "writer" }, "1.1.1.4" ]
       },
       builder: { "arch" => "amd64" },
       env: { "REDIS_URL" => "redis://x/y" },
       accessories: {
         "mysql" => {
-          "image" => "mysql:8.0",
+          "image" => "public.registry/mysql:8.0",
           "host" => "1.1.1.5",
           "port" => "3306",
           "env" => {
@@ -52,7 +54,8 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
         "monitoring" => {
           "service" => "custom-monitoring",
           "image" => "monitoring:latest",
-          "roles" => [ "web" ],
+          "registry" => { "server" => "other.registry", "username" => "user", "password" => "pw" },
+          "role" => "web",
           "port" => "4321:4321",
           "labels" => {
             "cache" => "true"
@@ -67,6 +70,14 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
           "proxy" => {
             "host" => "monitoring.example.com"
           }
+        },
+        "proxy" => {
+          "image" => "proxy:latest",
+          "tags" => [ "writer", "reader" ]
+        },
+        "logger" => {
+          "image" => "logger:latest",
+          "tag" => "writer"
         }
       }
     }
@@ -80,6 +91,21 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     assert_equal "custom-monitoring", @config.accessory(:monitoring).service_name
   end
 
+  test "image" do
+    assert_equal "public.registry/mysql:8.0", @config.accessory(:mysql).image
+    assert_equal "redis:latest", @config.accessory(:redis).image
+    assert_equal "other.registry/monitoring:latest", @config.accessory(:monitoring).image
+  end
+
+  test "registry" do
+    assert_nil @config.accessory(:mysql).registry
+    assert_nil @config.accessory(:redis).registry
+    monitoring_registry = @config.accessory(:monitoring).registry
+    assert_equal "other.registry", monitoring_registry.server
+    assert_equal "user", monitoring_registry.username
+    assert_equal "pw", monitoring_registry.password
+  end
+
   test "port" do
     assert_equal "3306:3306", @config.accessory(:mysql).port
     assert_equal "6379:6379", @config.accessory(:redis).port
@@ -89,6 +115,8 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     assert_equal [ "1.1.1.5" ], @config.accessory(:mysql).hosts
     assert_equal [ "1.1.1.6", "1.1.1.7" ], @config.accessory(:redis).hosts
     assert_equal [ "1.1.1.1", "1.1.1.2" ], @config.accessory(:monitoring).hosts
+    assert_equal [ "1.1.1.1", "1.1.1.3", "1.1.1.2" ], @config.accessory(:proxy).hosts
+    assert_equal [ "1.1.1.1", "1.1.1.3" ], @config.accessory(:logger).hosts
   end
 
   test "missing host" do
@@ -99,14 +127,14 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     end
   end
 
-  test "setting host, hosts and roles" do
+  test "setting host, hosts, roles and tags" do
     @deploy[:accessories]["mysql"]["hosts"] = [ "mysql-db1" ]
     @deploy[:accessories]["mysql"]["roles"] = [ "db" ]
 
     exception = assert_raises(Kamal::ConfigurationError) do
       Kamal::Configuration.new(@deploy)
     end
-    assert_equal "accessories/mysql: specify one of `host`, `hosts` or `roles`", exception.message
+    assert_equal "accessories/mysql: specify one of `host`, `hosts`, `role`, `roles`, `tag` or `tags`", exception.message
   end
 
   test "all hosts" do
@@ -169,4 +197,12 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     assert @config.accessory(:monitoring).running_proxy?
     assert_equal [ "monitoring.example.com" ], @config.accessory(:monitoring).proxy.hosts
   end
+
+  test "can't set restart in options" do
+    @deploy[:accessories]["mysql"]["options"] = { "restart" => "always" }
+
+    assert_raises Kamal::ConfigurationError, "servers/workers: Cannot set restart policy in docker options, unless-stopped is required" do
+      Kamal::Configuration.new(@deploy)
+    end
+  end
 end

test/configuration/boot_test.rb

@@ -0,0 +1,54 @@
+require "test_helper"
+
+class ConfigurationBootTest < ActiveSupport::TestCase
+  test "no group strategy" do
+    deploy = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, builder: { "arch" => "amd64" },
+      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => [ "1.1.1.3", "1.1.1.4" ] }
+    }
+
+    config = Kamal::Configuration.new(deploy)
+
+    assert_nil config.boot.limit
+    assert_nil config.boot.wait
+  end
+
+  test "specific limit group strategy" do
+    deploy = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, builder: { "arch" => "amd64" },
+      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => [ "1.1.1.3", "1.1.1.4" ] },
+      boot: { "limit" => 3, "wait" => 2 }
+    }
+
+    config = Kamal::Configuration.new(deploy)
+
+    assert_equal 3, config.boot.limit
+    assert_equal 2, config.boot.wait
+  end
+
+  test "percentage-based group strategy" do
+    deploy = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, builder: { "arch" => "amd64" },
+      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => [ "1.1.1.3", "1.1.1.4" ] },
+      boot: { "limit" => "50%", "wait" => 2 }
+    }
+
+    config = Kamal::Configuration.new(deploy)
+
+    assert_equal 2, config.boot.limit
+    assert_equal 2, config.boot.wait
+  end
+
+  test "percentage-based group strategy limit is at least 1" do
+    deploy = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, builder: { "arch" => "amd64" },
+      servers: { "web" => [ "1.1.1.1", "1.1.1.2" ], "workers" => [ "1.1.1.3", "1.1.1.4" ] },
+      boot: { "limit" => "1%", "wait" => 2 }
+    }
+
+    config = Kamal::Configuration.new(deploy)
+
+    assert_equal 1, config.boot.limit
+    assert_equal 2, config.boot.wait
+  end
+end

test/configuration/env/tags_test.rb

@@ -92,7 +92,25 @@ class ConfigurationEnvTagsTest < ActiveSupport::TestCase
       }
 
       config = Kamal::Configuration.new(deploy)
-      assert_equal "hello", config.role("web").env("1.1.1.1").secrets["PASSWORD"]
+      assert_equal "PASSWORD=hello\n", config.role("web").env("1.1.1.1").secrets_io.string
+    end
+  end
+
+  test "aliased tag secret env" do
+    with_test_secrets("secrets" => "PASSWORD=hello\nALIASED_PASSWORD=aliased_hello") do
+      deploy = {
+        service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" },
+        servers: [ { "1.1.1.1" => "secrets" } ],
+        builder: { "arch" => "amd64" },
+        env: {
+          "tags" => {
+            "secrets" => { "secret" => [ "PASSWORD:ALIASED_PASSWORD" ] }
+          }
+        }
+      }
+
+      config = Kamal::Configuration.new(deploy)
+      assert_equal "PASSWORD=aliased_hello\n", config.role("web").env("1.1.1.1").secrets_io.string
     end
   end
 

test/configuration/env_test.rb

@@ -48,6 +48,20 @@ class ConfigurationEnvTest < ActiveSupport::TestCase
     end
   end
 
+  test "aliased secrets" do
+    with_test_secrets("secrets" => "ALIASED_PASSWORD=hello") do
+      config = {
+        "secret" => [ "PASSWORD:ALIASED_PASSWORD" ],
+        "clear" => {}
+      }
+
+      assert_config \
+        config: config,
+        clear: {},
+        secrets: { "PASSWORD" => "hello" }
+    end
+  end
+
   private
     def assert_config(config:, clear: {}, secrets: {})
       env = Kamal::Configuration::Env.new config: config, secrets: Kamal::Secrets.new

test/configuration/proxy/boot_test.rb

@@ -0,0 +1,29 @@
+require "test_helper"
+
+class ConfigurationProxyBootTest < ActiveSupport::TestCase
+  setup do
+    ENV["RAILS_MASTER_KEY"] = "456"
+    ENV["VERSION"] = "missing"
+
+    @deploy = {
+      service: "app", image: "dhh/app",
+      registry: { "username" => "dhh", "password" => "secret" },
+      builder: { "arch" => "amd64" },
+      env: { "REDIS_URL" => "redis://x/y" },
+      servers: [ "1.1.1.1", "1.1.1.2" ],
+      volumes: [ "/local/path:/container/path" ]
+    }
+
+    @config = Kamal::Configuration.new(@deploy)
+    @proxy_boot_config = @config.proxy_boot
+  end
+
+  test "proxy directories" do
+    assert_equal ".kamal/proxy/apps-config", @proxy_boot_config.apps_directory
+    assert_equal "/home/kamal-proxy/.apps-config", @proxy_boot_config.apps_container_directory
+    assert_equal ".kamal/proxy/apps-config/app", @proxy_boot_config.app_directory
+    assert_equal "/home/kamal-proxy/.apps-config/app", @proxy_boot_config.app_container_directory
+    assert_equal ".kamal/proxy/apps-config/app/error_pages", @proxy_boot_config.error_pages_directory
+    assert_equal "/home/kamal-proxy/.apps-config/app/error_pages", @proxy_boot_config.error_pages_container_directory
+  end
+end

test/configuration/proxy_test.rb

@@ -38,6 +38,13 @@ class ConfigurationProxyTest < ActiveSupport::TestCase
     assert_not config.proxy.ssl?
   end
 
+  test "false not allowed" do
+    @deploy[:proxy] = false
+    assert_raises(Kamal::ConfigurationError, "proxy: should be a hash") do
+      config.proxy
+    end
+  end
+
   private
     def config
       Kamal::Configuration.new(@deploy)

test/configuration/role_test.rb

@@ -258,6 +258,14 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
     assert_equal "18s", config_with_roles.role(:workers).proxy.deploy_options[:"target-timeout"]
   end
 
+  test "can't set restart in options" do
+    @deploy_with_roles[:servers]["workers"]["options"] = { "restart" => "always" }
+
+    assert_raises Kamal::ConfigurationError, "servers/workers: Cannot set restart policy in docker options, unless-stopped is required" do
+      Kamal::Configuration.new(@deploy_with_roles)
+    end
+  end
+
   private
     def config
       Kamal::Configuration.new(@deploy)

test/configuration_test.rb

@@ -30,7 +30,7 @@ class ConfigurationTest < ActiveSupport::TestCase
   %i[ service image registry ].each do |key|
     test "#{key} config required" do
       assert_raise(Kamal::ConfigurationError) do
-        Kamal::Configuration.new @deploy.tap { _1.delete key }
+        Kamal::Configuration.new @deploy.tap { |config| config.delete key }
       end
     end
   end
@@ -38,21 +38,36 @@ class ConfigurationTest < ActiveSupport::TestCase
   %w[ username password ].each do |key|
     test "registry #{key} required" do
       assert_raise(Kamal::ConfigurationError) do
-        Kamal::Configuration.new @deploy.tap { _1[:registry].delete key }
+        Kamal::Configuration.new @deploy.tap { |config| config[:registry].delete key }
       end
     end
   end
 
   test "service name valid" do
     assert_nothing_raised do
-      Kamal::Configuration.new(@deploy.tap { _1[:service] = "hey-app1_primary" })
+      Kamal::Configuration.new(@deploy.tap { |config| config[:service] = "hey-app1_primary" })
-      Kamal::Configuration.new(@deploy.tap { _1[:service] = "MyApp" })
+      Kamal::Configuration.new(@deploy.tap { |config| config[:service] = "MyApp" })
     end
   end
 
   test "service name invalid" do
     assert_raise(Kamal::ConfigurationError) do
-      Kamal::Configuration.new @deploy.tap { _1[:service] = "app.com" }
+      Kamal::Configuration.new @deploy.tap { |config| config[:service] = "app.com" }
+    end
+  end
+
+  test "servers required" do
+    assert_raise(Kamal::ConfigurationError) do
+      Kamal::Configuration.new @deploy.tap { |config| config.delete(:servers) }
+    end
+  end
+
+  test "servers not required with accessories" do
+    assert_nothing_raised do
+      @deploy.delete(:servers)
+      @deploy[:accessories] = { "foo" => { "image" => "foo/bar", "host" => "1.1.1.1" } }
+
+      Kamal::Configuration.new(@deploy)
     end
   end
 
@@ -250,7 +265,7 @@ class ConfigurationTest < ActiveSupport::TestCase
   test "destination required" do
     dest_config_file = Pathname.new(File.expand_path("fixtures/deploy_for_required_dest.yml", __dir__))
 
-    assert_raises(Kamal::ConfigurationError) do
+    assert_raises(ArgumentError, "You must specify a destination") do
       config = Kamal::Configuration.create_from config_file: dest_config_file
     end
 

test/fixtures/deploy.elsewhere.yml

@@ -0,0 +1,12 @@
+service: app3
+image: dhh/app3
+servers:
+  - "1.1.1.3"
+  - "1.1.1.4"
+registry:
+  username: user
+  password: pw
+builder:
+  arch: amd64
+aliases:
+  other_config: config -c config/deploy2.yml

test/fixtures/deploy.yml

@@ -0,0 +1,13 @@
+service: app
+image: dhh/app
+servers:
+  - "1.1.1.1"
+  - "1.1.1.2"
+registry:
+  username: user
+  password: pw
+builder:
+  arch: amd64
+aliases:
+  other_config: config -c config/deploy2.yml
+  other_destination_config: config -d elsewhere

test/fixtures/deploy2.yml

@@ -0,0 +1,12 @@
+service: app2
+image: dhh/app2
+servers:
+  - "1.1.1.1"
+  - "1.1.1.2"
+registry:
+  username: user2
+  password: pw2
+builder:
+  arch: amd64
+aliases:
+  other_config: config -c config/deploy2.yml

test/fixtures/deploy_with_accessories_with_different_registries.yml

@@ -0,0 +1,47 @@
+service: app
+image: dhh/app
+servers:
+  web:
+    - "1.1.1.1"
+    - "1.1.1.2"
+  workers:
+    - "1.1.1.3"
+    - "1.1.1.4"
+registry:
+  server: private.registry
+  username: user
+  password: pw
+builder:
+  arch: amd64
+
+accessories:
+  mysql:
+    image: private.registry/mysql:5.7
+    host: 1.1.1.3
+    port: 3306
+    env:
+      clear:
+        MYSQL_ROOT_HOST: '%'
+      secret:
+        - MYSQL_ROOT_PASSWORD
+    files:
+      - test/fixtures/files/my.cnf:/etc/mysql/my.cnf
+    directories:
+      - data:/var/lib/mysql
+  redis:
+    image: redis:latest
+    roles:
+      - web
+    port: 6379
+    directories:
+      - data:/data
+  busybox:
+    service: custom-box
+    image: busybox:latest
+    host: 1.1.1.3
+    registry:
+      server: other.registry
+      username: other_user
+      password: other_pw
+
+readiness_delay: 0