Set port

Create a `kamal` network for the proxy and app containers to run in.
This allows the proxy to refer to the app containers by name.

.github/workflows/ci.yml

@@ -1,10 +1,25 @@
 name: CI
-on: 
+on:
   push:
     branches:
       - main
   pull_request:
 jobs:
+  rubocop:
+    name: RuboCop
+    runs-on: ubuntu-latest
+    env:
+      BUNDLE_ONLY: rubocop
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Setup Ruby and install gems
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.3.0
+          bundler-cache: true
+      - name: Run Rubocop
+        run: bundle exec rubocop --parallel
   tests:
     strategy:
       matrix:
@@ -12,17 +27,29 @@ jobs:
           - "2.7"
           - "3.1"
           - "3.2"
+          - "3.3"
         gemfile:
           - Gemfile
+          - gemfiles/ruby_2.7.gemfile
           - gemfiles/rails_edge.gemfile
-        continue-on-error: [false]
+        exclude:
+          - ruby-version: "2.7"
+            gemfile: Gemfile
+          - ruby-version: "2.7"
+            gemfile: gemfiles/rails_edge.gemfile
+          - ruby-version: "3.1"
+            gemfile: gemfiles/ruby_2.7.gemfile
+          - ruby-version: "3.2"
+            gemfile: gemfiles/ruby_2.7.gemfile
+          - ruby-version: "3.3"
+            gemfile: gemfiles/ruby_2.7.gemfile
     name: ${{ format('Tests (Ruby {0})', matrix.ruby-version) }}
     runs-on: ubuntu-latest
-    continue-on-error: ${{ matrix.continue-on-error }}
+    continue-on-error: true
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install Ruby
         uses: ruby/setup-ruby@v1

.rubocop.yml

@@ -0,0 +1,2 @@
+inherit_gem:
+  rubocop-rails-omakase: rubocop.yml

Gemfile

@@ -1,4 +1,8 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 gemspec
+
+group :rubocop do
+  gem "rubocop-rails-omakase", require: false
+end

Gemfile.lock

@@ -1,8 +1,9 @@
 PATH
   remote: .
   specs:
-    kamal (1.1.0)
+    kamal (1.4.0)
       activesupport (>= 7.0)
+      base64 (~> 0.2)
       bcrypt_pbkdf (~> 1.0)
       concurrent-ruby (~> 1.2)
       dotenv (~> 2.8)
@@ -15,82 +16,152 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (7.0.4.3)
-      actionview (= 7.0.4.3)
-      activesupport (= 7.0.4.3)
-      rack (~> 2.0, >= 2.2.0)
+    actionpack (7.1.2)
+      actionview (= 7.1.2)
+      activesupport (= 7.1.2)
+      nokogiri (>= 1.8.5)
+      racc
+      rack (>= 2.2.4)
+      rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (7.0.4.3)
-      activesupport (= 7.0.4.3)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    actionview (7.1.2)
+      activesupport (= 7.1.2)
       builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activesupport (7.0.4.3)
+      erubi (~> 1.11)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    activesupport (7.1.2)
+      base64
+      bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
+      connection_pool (>= 2.2.5)
+      drb
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
+      mutex_m
       tzinfo (~> 2.0)
+    ast (2.4.2)
+    base64 (0.2.0)
     bcrypt_pbkdf (1.1.0)
+    bigdecimal (3.1.5)
     builder (3.2.4)
     concurrent-ruby (1.2.2)
+    connection_pool (2.4.1)
     crass (1.0.6)
-    debug (1.7.2)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
+    debug (1.9.1)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     dotenv (2.8.1)
+    drb (2.2.0)
+      ruby2_keywords
     ed25519 (1.3.0)
     erubi (1.12.0)
-    i18n (1.12.0)
+    i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    io-console (0.6.0)
-    irb (1.6.3)
-      reline (>= 0.3.0)
-    loofah (2.20.0)
+    io-console (0.7.1)
+    irb (1.11.0)
+      rdoc
+      reline (>= 0.3.8)
+    json (2.7.1)
+    language_server-protocol (3.17.0.3)
+    loofah (2.22.0)
       crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    method_source (1.0.0)
-    minitest (5.18.0)
-    mocha (2.0.2)
+      nokogiri (>= 1.12.0)
+    minitest (5.20.0)
+    mocha (2.1.0)
       ruby2_keywords (>= 0.0.5)
+    mutex_m (0.2.0)
     net-scp (4.0.0)
       net-ssh (>= 2.6.5, < 8.0.0)
-    net-ssh (7.1.0)
-    nokogiri (1.14.2-arm64-darwin)
+    net-ssh (7.2.1)
+    nokogiri (1.16.0-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.14.2-x86_64-darwin)
+    nokogiri (1.16.0-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.14.2-x86_64-linux)
+    nokogiri (1.16.0-x86_64-linux)
       racc (~> 1.4)
-    racc (1.6.2)
-    rack (2.2.6.4)
+    parallel (1.24.0)
+    parser (3.3.0.5)
+      ast (~> 2.4.1)
+      racc
+    psych (5.1.2)
+      stringio
+    racc (1.7.3)
+    rack (3.0.8)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
+    rackup (2.1.0)
+      rack (>= 3)
+      webrick (~> 1.8)
+    rails-dom-testing (2.2.0)
+      activesupport (>= 5.0.0)
+      minitest
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.5.0)
-      loofah (~> 2.19, >= 2.19.1)
-    railties (7.0.4.3)
-      actionpack (= 7.0.4.3)
-      activesupport (= 7.0.4.3)
-      method_source
+    rails-html-sanitizer (1.6.0)
+      loofah (~> 2.21)
+      nokogiri (~> 1.14)
+    railties (7.1.2)
+      actionpack (= 7.1.2)
+      activesupport (= 7.1.2)
+      irb
+      rackup (>= 1.0.0)
       rake (>= 12.2)
-      thor (~> 1.0)
-      zeitwerk (~> 2.5)
-    rake (13.0.6)
-    reline (0.3.3)
+      thor (~> 1.0, >= 1.2.2)
+      zeitwerk (~> 2.6)
+    rainbow (3.1.1)
+    rake (13.1.0)
+    rdoc (6.6.2)
+      psych (>= 4.0.0)
+    regexp_parser (2.9.0)
+    reline (0.4.2)
       io-console (~> 0.5)
+    rexml (3.2.6)
+    rubocop (1.62.1)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.31.2)
+      parser (>= 3.3.0.4)
+    rubocop-minitest (0.35.0)
+      rubocop (>= 1.61, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-performance (1.20.2)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+    rubocop-rails (2.24.0)
+      activesupport (>= 4.2.0)
+      rack (>= 1.1)
+      rubocop (>= 1.33.0, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-rails-omakase (1.0.0)
+      rubocop
+      rubocop-minitest
+      rubocop-performance
+      rubocop-rails
+    ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sshkit (1.21.4)
+    sshkit (1.21.7)
+      mutex_m
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
-    thor (1.2.1)
+    stringio (3.1.0)
+    thor (1.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.6.7)
+    unicode-display_width (2.5.0)
+    webrick (1.8.1)
+    zeitwerk (2.6.12)
 
 PLATFORMS
   arm64-darwin
@@ -102,6 +173,7 @@ DEPENDENCIES
   kamal!
   mocha
   railties
+  rubocop-rails-omakase
 
 BUNDLED WITH
    2.4.3

README.md

@@ -1,6 +1,6 @@
 # Kamal: Deploy web apps anywhere
 
-From bare metal to cloud VMs, deploy web apps anywhere with zero downtime. Kamal has the dynamic reverse-proxy Traefik hold requests while a new app container is started and the old one is stopped. Works seamlessly across multiple hosts, using SSHKit to execute commands. Originally built for Rails apps, Kamal will work with any type of web app that can be containerized with Docker.
+From bare metal to cloud VMs, deploy web apps anywhere with zero downtime. Kamal uses mproxy for zero-downtime deployments. Works seamlessly across multiple hosts, using SSHKit to execute commands. Originally built for Rails apps, Kamal will work with any type of web app that can be containerized with Docker.
 
 ➡️ See [kamal-deploy.org](https://kamal-deploy.org) for documentation on [installation](https://kamal-deploy.org/docs/installation), [configuration](https://kamal-deploy.org/docs/configuration), and [commands](https://kamal-deploy.org/docs/commands).
 

gemfiles/ruby_2.7.gemfile

@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+gemspec path: "../"
+
+gem "nokogiri", "~> 1.15.0"

kamal.gemspec

@@ -20,6 +20,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "ed25519", "~> 1.2"
   spec.add_dependency "bcrypt_pbkdf", "~> 1.0"
   spec.add_dependency "concurrent-ruby", "~> 1.2"
+  spec.add_dependency "base64", "~> 0.2"
 
   spec.add_development_dependency "debug"
   spec.add_development_dependency "mocha"

lib/kamal/cli/accessory.rb

@@ -5,11 +5,11 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
       if name == "all"
         KAMAL.accessory_names.each { |accessory_name| boot(accessory_name) }
       else
-        with_accessory(name) do |accessory|
+        with_accessory(name) do |accessory, hosts|
           directories(name)
           upload(name)
 
-          on(accessory.hosts) do
+          on(hosts) do
             execute *KAMAL.registry.login if login
             execute *KAMAL.auditor.record("Booted #{name} accessory"), verbosity: :debug
             execute *accessory.run
@@ -22,8 +22,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "upload [NAME]", "Upload accessory files to host", hide: true
   def upload(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           accessory.files.each do |(local, remote)|
             accessory.ensure_local_file_present(local)
 
@@ -39,8 +39,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "directories [NAME]", "Create accessory directories on host", hide: true
   def directories(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           accessory.directories.keys.each do |host_path|
             execute *accessory.make_directory(host_path)
           end
@@ -49,17 +49,21 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     end
   end
 
-  desc "reboot [NAME]", "Reboot existing accessory on host (stop container, remove container, start new container)"
+  desc "reboot [NAME]", "Reboot existing accessory on host (stop container, remove container, start new container; use NAME=all to boot all accessories)"
   def reboot(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
-          execute *KAMAL.registry.login
-        end
+      if name == "all"
+        KAMAL.accessory_names.each { |accessory_name| reboot(accessory_name) }
+      else
+        with_accessory(name) do |accessory, hosts|
+          on(hosts) do
+            execute *KAMAL.registry.login
+          end
 
-        stop(name)
-        remove_container(name)
-        boot(name, login: false)
+          stop(name)
+          remove_container(name)
+          boot(name, login: false)
+        end
       end
     end
   end
@@ -67,8 +71,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "start [NAME]", "Start existing accessory container on host"
   def start(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           execute *KAMAL.auditor.record("Started #{name} accessory"), verbosity: :debug
           execute *accessory.start
         end
@@ -79,8 +83,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "stop [NAME]", "Stop existing accessory container on host"
   def stop(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           execute *KAMAL.auditor.record("Stopped #{name} accessory"), verbosity: :debug
           execute *accessory.stop, raise_on_non_zero_exit: false
         end
@@ -103,8 +107,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     if name == "all"
       KAMAL.accessory_names.each { |accessory_name| details(accessory_name) }
     else
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) { puts capture_with_info(*accessory.info) }
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) { puts capture_with_info(*accessory.info) }
       end
     end
   end
@@ -113,7 +117,7 @@ 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)
-    with_accessory(name) do |accessory|
+    with_accessory(name) do |accessory, hosts|
       case
       when options[:interactive] && options[:reuse]
         say "Launching interactive command with via SSH from existing container...", :magenta
@@ -125,14 +129,14 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
 
       when options[:reuse]
         say "Launching command from existing container...", :magenta
-        on(accessory.hosts) do
+        on(hosts) do
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
           capture_with_info(*accessory.execute_in_existing_container(cmd))
         end
 
       else
         say "Launching command from new container...", :magenta
-        on(accessory.hosts) do
+        on(hosts) do
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
           capture_with_info(*accessory.execute_in_new_container(cmd))
         end
@@ -146,12 +150,12 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
   option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
   def logs(name)
-    with_accessory(name) do |accessory|
+    with_accessory(name) do |accessory, hosts|
       grep = options[:grep]
 
       if options[:follow]
         run_locally do
-          info "Following logs on #{accessory.hosts}..."
+          info "Following logs on #{hosts}..."
           info accessory.follow_logs(grep: grep)
           exec accessory.follow_logs(grep: grep)
         end
@@ -159,7 +163,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         since = options[:since]
         lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
 
-        on(accessory.hosts) do
+        on(hosts) do
           puts capture_with_info(*accessory.logs(since: since, lines: lines, grep: grep))
         end
       end
@@ -173,7 +177,7 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
       if name == "all"
         KAMAL.accessory_names.each { |accessory_name| remove(accessory_name) }
       else
-        if options[:confirmed] || ask("This will remove all containers, images and data directories for #{name}. Are you sure?", limited_to: %w( y N ), default: "N") == "y"
+        confirming "This will remove all containers, images and data directories for #{name}. Are you sure?" do
           with_accessory(name) do
             stop(name)
             remove_container(name)
@@ -188,8 +192,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "remove_container [NAME]", "Remove accessory container from host", hide: true
   def remove_container(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           execute *KAMAL.auditor.record("Remove #{name} accessory container"), verbosity: :debug
           execute *accessory.remove_container
         end
@@ -200,8 +204,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "remove_image [NAME]", "Remove accessory image from host", hide: true
   def remove_image(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           execute *KAMAL.auditor.record("Removed #{name} accessory image"), verbosity: :debug
           execute *accessory.remove_image
         end
@@ -212,8 +216,8 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
   desc "remove_service_directory [NAME]", "Remove accessory directory used for uploaded files and data directories from host", hide: true
   def remove_service_directory(name)
     mutating do
-      with_accessory(name) do |accessory|
-        on(accessory.hosts) do
+      with_accessory(name) do |accessory, hosts|
+        on(hosts) do
           execute *accessory.remove_service_directory
         end
       end
@@ -222,8 +226,9 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
 
   private
     def with_accessory(name)
-      if accessory = KAMAL.accessory(name)
-        yield accessory
+      if KAMAL.config.accessory(name)
+        accessory = KAMAL.accessory(name)
+        yield accessory, accessory_hosts(accessory)
       else
         error_on_missing_accessory(name)
       end
@@ -236,4 +241,12 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         "No accessory by the name of '#{name}'" +
         (options ? " (options: #{options.to_sentence})" : "")
     end
+
+    def accessory_hosts(accessory)
+      if KAMAL.specific_hosts&.any?
+        KAMAL.specific_hosts & accessory.hosts
+      else
+        accessory.hosts
+      end
+    end
 end

lib/kamal/cli/app.rb

@@ -7,58 +7,20 @@ class Kamal::Cli::App < Kamal::Cli::Base
         using_version(version_or_latest) do |version|
           say "Start container with version #{version} using a #{KAMAL.config.readiness_delay}s readiness delay (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
             execute *KAMAL.auditor.record("Tagging #{KAMAL.config.absolute_image} as the latest image"), verbosity: :debug
             execute *KAMAL.app.tag_current_image_as_latest
 
             KAMAL.roles_on(host).each do |role|
-              app = KAMAL.app(role: role)
-              role_config = KAMAL.config.role(role)
-
-              if role_config.assets?
-                execute *app.extract_assets
-                old_version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
-                execute *app.sync_asset_volumes(old_version: old_version)
-              end
+              Kamal::Cli::App::PrepareAssets.new(host, role, self).run
             end
           end
 
+
           on(KAMAL.hosts, **KAMAL.boot_strategy) do |host|
             KAMAL.roles_on(host).each do |role|
-              app = KAMAL.app(role: role)
-              auditor = KAMAL.auditor(role: role)
-              role_config = KAMAL.config.role(role)
-
-              if capture_with_info(*app.container_id_for_version(version), raise_on_non_zero_exit: false).present?
-                tmp_version = "#{version}_replaced_#{SecureRandom.hex(8)}"
-                info "Renaming container #{version} to #{tmp_version} as already deployed on #{host}"
-                execute *auditor.record("Renaming container #{version} to #{tmp_version}"), verbosity: :debug
-                execute *app.rename_container(version: version, new_version: tmp_version)
-              end
-
-              old_version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
-
-              execute *app.tie_cord(role_config.cord_host_file) if role_config.uses_cord?
-
-              execute *auditor.record("Booted app version #{version}"), verbosity: :debug
-
-              execute *app.run(hostname: "#{host}-#{SecureRandom.hex(6)}")
-
-              Kamal::Cli::Healthcheck::Poller.wait_for_healthy(pause_after_ready: true) { capture_with_info(*app.status(version: version)) }
-
-              if old_version.present?
-                if role_config.uses_cord?
-                  cord = capture_with_info(*app.cord(version: old_version), raise_on_non_zero_exit: false).strip
-                  if cord.present?
-                    execute *app.cut_cord(cord)
-                    Kamal::Cli::Healthcheck::Poller.wait_for_unhealthy(pause_after_ready: true) { capture_with_info(*app.status(version: old_version)) }
-                  end
-                end
-
-                execute *app.stop(version: old_version), raise_on_non_zero_exit: false
-
-                execute *app.clean_up_assets if role_config.assets?
-              end
+              Kamal::Cli::App::Boot.new(host, role, version, self).run
             end
           end
         end
@@ -73,8 +35,14 @@ class Kamal::Cli::App < Kamal::Cli::Base
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
+          app = KAMAL.app(role: role)
           execute *KAMAL.auditor.record("Started app version #{KAMAL.config.version}"), verbosity: :debug
-          execute *KAMAL.app(role: role).start, raise_on_non_zero_exit: false
+          execute *app.start, raise_on_non_zero_exit: false
+
+          if role.running_proxy?
+            version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
+            execute *KAMAL.proxy.deploy(app.container_name(version))
+          end
         end
       end
     end
@@ -87,8 +55,16 @@ class Kamal::Cli::App < Kamal::Cli::Base
         roles = KAMAL.roles_on(host)
 
         roles.each do |role|
+          app = KAMAL.app(role: role)
+          version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
+
           execute *KAMAL.auditor.record("Stopped app", role: role), verbosity: :debug
-          execute *KAMAL.app(role: role).stop, raise_on_non_zero_exit: false
+
+          if role.running_proxy?
+            execute *KAMAL.proxy.remove(app.container_name(version)), raise_on_non_zero_exit: false
+          end
+
+          execute *app.stop, raise_on_non_zero_exit: false
         end
       end
     end
@@ -202,19 +178,20 @@ class Kamal::Cli::App < Kamal::Cli::Base
     # FIXME: Catch when app containers aren't running
 
     grep = options[:grep]
-
+    since = options[:since]
     if options[:follow]
+      lines = options[:lines].presence || ((since || grep) ? nil : 10) # Default to 10 lines if since or grep isn't set
+
       run_locally do
         info "Following logs on #{KAMAL.primary_host}..."
 
-        KAMAL.specific_roles ||= ["web"]
+        KAMAL.specific_roles ||= [ "web" ]
         role = KAMAL.roles_on(KAMAL.primary_host).first
 
-        info KAMAL.app(role: role).follow_logs(host: KAMAL.primary_host, grep: grep)
-        exec KAMAL.app(role: role).follow_logs(host: KAMAL.primary_host, grep: grep)
+        info KAMAL.app(role: role).follow_logs(host: KAMAL.primary_host, lines: lines, grep: grep)
+        exec KAMAL.app(role: role).follow_logs(host: KAMAL.primary_host, lines: lines, grep: grep)
       end
     else
-      since = options[:since]
       lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
 
       on(KAMAL.hosts) do |host|

lib/kamal/cli/app/boot.rb

@@ -0,0 +1,59 @@
+class Kamal::Cli::App::Boot
+  attr_reader :host, :role, :version, :sshkit
+  delegate :execute, :capture_with_info, :info, to: :sshkit
+  delegate :assets?, :running_proxy?, to: :role
+
+  def initialize(host, role, version, sshkit)
+    @host = host
+    @role = role
+    @version = version
+    @sshkit = sshkit
+  end
+
+  def run
+    old_version = old_version_renamed_if_clashing
+
+    start_new_version
+
+    if old_version
+      stop_old_version(old_version)
+    end
+  end
+
+  private
+    def app
+      @app ||= KAMAL.app(role: role)
+    end
+
+    def auditor
+      @auditor = KAMAL.auditor(role: role)
+    end
+
+    def audit(message)
+      execute *auditor.record(message), verbosity: :debug
+    end
+
+    def old_version_renamed_if_clashing
+      if capture_with_info(*app.container_id_for_version(version), raise_on_non_zero_exit: false).present?
+        renamed_version = "#{version}_replaced_#{SecureRandom.hex(8)}"
+        info "Renaming container #{version} to #{renamed_version} as already deployed on #{host}"
+        audit("Renaming container #{version} to #{renamed_version}")
+        execute *app.rename_container(version: version, new_version: renamed_version)
+      end
+
+      capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip.presence
+    end
+
+    def start_new_version
+      audit "Booted app version #{version}"
+      execute *app.run(hostname: "#{host}-#{SecureRandom.hex(6)}")
+      if running_proxy?
+        execute *KAMAL.proxy.deploy("#{app.container_name(version)}:#{role.port}")
+      end
+    end
+
+    def stop_old_version(version)
+      execute *app.stop(version: version), raise_on_non_zero_exit: false
+      execute *app.clean_up_assets if assets?
+    end
+end

lib/kamal/cli/app/prepare_assets.rb

@@ -0,0 +1,24 @@
+class Kamal::Cli::App::PrepareAssets
+  attr_reader :host, :role, :sshkit
+  delegate :execute, :capture_with_info, :info, to: :sshkit
+  delegate :assets?, to: :role
+
+  def initialize(host, role, sshkit)
+    @host = host
+    @role = role
+    @sshkit = sshkit
+  end
+
+  def run
+    if assets?
+      execute *app.extract_assets
+      old_version = capture_with_info(*app.current_running_version, raise_on_non_zero_exit: false).strip
+      execute *app.sync_asset_volumes(old_version: old_version)
+    end
+  end
+
+  private
+    def app
+      @app ||= KAMAL.app(role: role)
+    end
+end

lib/kamal/cli/base.rb

@@ -14,8 +14,8 @@ module Kamal::Cli
     class_option :version, desc: "Run commands against a specific app version"
 
     class_option :primary, type: :boolean, aliases: "-p", desc: "Run commands only on primary host instead of all"
-    class_option :hosts, aliases: "-h", desc: "Run commands on these hosts instead of all (separate by comma)"
-    class_option :roles, aliases: "-r", desc: "Run commands on these roles instead of all (separate by comma)"
+    class_option :hosts, aliases: "-h", desc: "Run commands on these hosts instead of all (separate by comma, supports wildcards with *)"
+    class_option :roles, aliases: "-r", desc: "Run commands on these roles instead of all (separate by comma, supports wildcards with *)"
 
     class_option :config_file, aliases: "-c", default: "config/deploy.yml", desc: "Path to config file"
     class_option :destination, aliases: "-d", desc: "Specify destination to be used for config file (staging -> deploy.staging.yml)"
@@ -73,7 +73,7 @@ module Kamal::Cli
       def print_runtime
         started_at = Time.now
         yield
-        return Time.now - started_at
+        Time.now - started_at
       ensure
         runtime = Time.now - started_at
         puts "  Finished all in #{sprintf("%.1f seconds", runtime)}"
@@ -84,7 +84,7 @@ module Kamal::Cli
 
         run_hook "pre-connect"
 
-        ensure_run_directory
+        ensure_run_and_locks_directory
 
         acquire_lock
 
@@ -103,6 +103,16 @@ module Kamal::Cli
         release_lock
       end
 
+      def confirming(question)
+        return yield if options[:confirmed]
+
+        if ask(question, limited_to: %w[ y N ], default: "N") == "y"
+          yield
+        else
+          say "Aborted", :red
+        end
+      end
+
       def acquire_lock
         raise_if_locked do
           say "Acquiring the deploy lock...", :magenta
@@ -123,8 +133,9 @@ module Kamal::Cli
         yield
       rescue SSHKit::Runner::ExecuteError => e
         if e.message =~ /cannot create directory/
+          say "Deploy lock already in place!", :red
           on(KAMAL.primary_host) { puts capture_with_debug(*KAMAL.lock.status) }
-          raise LockError, "Deploy lock found"
+          raise LockError, "Deploy lock found. Run 'kamal lock help' for more information"
         else
           raise e
         end
@@ -175,10 +186,14 @@ module Kamal::Cli
         instance_variable_get("@_invocations").first
       end
 
-      def ensure_run_directory
+      def ensure_run_and_locks_directory
         on(KAMAL.hosts) do
           execute(*KAMAL.server.ensure_run_directory)
         end
+
+        on(KAMAL.primary_host) do
+          execute(*KAMAL.lock.ensure_locks_directory)
+        end
       end
-    end
+  end
 end

lib/kamal/cli/env.rb

@@ -8,22 +8,16 @@ class Kamal::Cli::Env < Kamal::Cli::Base
         execute *KAMAL.auditor.record("Pushed env files"), verbosity: :debug
 
         KAMAL.roles_on(host).each do |role|
-          role_config = KAMAL.config.role(role)
           execute *KAMAL.app(role: role).make_env_directory
-          upload! StringIO.new(role_config.env_file), role_config.host_env_file_path, mode: 400
+          upload! role.env.secrets_io, role.env.secrets_file, mode: 400
         end
       end
 
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.traefik.make_env_directory
-        upload! StringIO.new(KAMAL.traefik.env_file), KAMAL.traefik.host_env_file_path, mode: 400
-      end
-
       on(KAMAL.accessory_hosts) do
         KAMAL.accessories_on(host).each do |accessory|
           accessory_config = KAMAL.config.accessory(accessory)
           execute *KAMAL.accessory(accessory).make_env_directory
-          upload! StringIO.new(accessory_config.env_file), accessory_config.host_env_file_path, mode: 400
+          upload! accessory_config.env.secrets_io, accessory_config.env.secrets_file, mode: 400
         end
       end
     end
@@ -36,15 +30,10 @@ class Kamal::Cli::Env < Kamal::Cli::Base
         execute *KAMAL.auditor.record("Deleted env files"), verbosity: :debug
 
         KAMAL.roles_on(host).each do |role|
-          role_config = KAMAL.config.role(role)
           execute *KAMAL.app(role: role).remove_env_file
         end
       end
 
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.traefik.remove_env_file
-      end
-
       on(KAMAL.accessory_hosts) do
         KAMAL.accessories_on(host).each do |accessory|
           accessory_config = KAMAL.config.accessory(accessory)

lib/kamal/cli/healthcheck.rb

@@ -3,6 +3,7 @@ class Kamal::Cli::Healthcheck < Kamal::Cli::Base
 
   desc "perform", "Health check current app version"
   def perform
+    raise "The primary host is not configured to run a proxy" unless KAMAL.config.role(KAMAL.config.primary_role).running_proxy?
     on(KAMAL.primary_host) do
       begin
         execute *KAMAL.healthcheck.run

lib/kamal/cli/main.rb

@@ -1,15 +1,18 @@
 class Kamal::Cli::Main < Kamal::Cli::Base
   desc "setup", "Setup all accessories, push the env, and deploy app to servers"
+  option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
   def setup
     print_runtime do
       mutating do
+        invoke_options = deploy_options
+
         say "Ensure Docker is installed...", :magenta
-        invoke "kamal:cli:server:bootstrap"
+        invoke "kamal:cli:server:bootstrap", [], invoke_options
 
         say "Push env files...", :magenta
-        invoke "kamal:cli:env:push"
+        invoke "kamal:cli:env:push", [], invoke_options
 
-        invoke "kamal:cli:accessory:boot", [ "all" ]
+        invoke "kamal:cli:accessory:boot", [ "all" ], invoke_options
         deploy
       end
     end
@@ -35,11 +38,13 @@ class Kamal::Cli::Main < Kamal::Cli::Base
 
         run_hook "pre-deploy"
 
-        say "Ensure Traefik is running...", :magenta
-        invoke "kamal:cli:traefik:boot", [], invoke_options
+        say "Ensure proxy is running...", :magenta
+        invoke "kamal:cli:proxy:boot", [], invoke_options
 
-        say "Ensure app can pass healthcheck...", :magenta
-        invoke "kamal:cli:healthcheck:perform", [], invoke_options
+        if KAMAL.config.role(KAMAL.config.primary_role).running_proxy?
+          say "Ensure app can pass healthcheck...", :magenta
+          invoke "kamal:cli:healthcheck:perform", [], invoke_options
+        end
 
         say "Detect stale containers...", :magenta
         invoke "kamal:cli:app:stale_containers", [], invoke_options.merge(stop: true)
@@ -54,7 +59,7 @@ class Kamal::Cli::Main < Kamal::Cli::Base
     run_hook "post-deploy", runtime: runtime.round
   end
 
-  desc "redeploy", "Deploy app to servers without bootstrapping servers, starting Traefik, pruning, and registry login"
+  desc "redeploy", "Deploy app to servers without bootstrapping servers, starting proxy, pruning, and registry login"
   option :skip_push, aliases: "-P", type: :boolean, default: false, desc: "Skip image build and push"
   def redeploy
     runtime = print_runtime do
@@ -110,7 +115,7 @@ class Kamal::Cli::Main < Kamal::Cli::Base
 
   desc "details", "Show details about all containers"
   def details
-    invoke "kamal:cli:traefik:details"
+    invoke "kamal:cli:proxy:details"
     invoke "kamal:cli:app:details"
     invoke "kamal:cli:accessory:details", [ "all" ]
   end
@@ -188,12 +193,12 @@ class Kamal::Cli::Main < Kamal::Cli::Base
     end
   end
 
-  desc "remove", "Remove Traefik, app, accessories, and registry session from servers"
+  desc "remove", "Remove proxy, app, accessories, and registry session from servers"
   option :confirmed, aliases: "-y", type: :boolean, default: false, desc: "Proceed without confirmation question"
   def remove
     mutating do
-      if options[:confirmed] || ask("This will remove all containers and images. Are you sure?", limited_to: %w( y N ), default: "N") == "y"
-        invoke "kamal:cli:traefik:remove", [], options.without(:confirmed)
+      confirming "This will remove all containers and images. Are you sure?" do
+        invoke "kamal:cli:proxy:remove", [], options.without(:confirmed)
         invoke "kamal:cli:app:remove", [], options.without(:confirmed)
         invoke "kamal:cli:accessory:remove", [ "all" ], options
         invoke "kamal:cli:registry:logout", [], options.without(:confirmed)
@@ -233,8 +238,8 @@ class Kamal::Cli::Main < Kamal::Cli::Base
   desc "server", "Bootstrap servers with curl and Docker"
   subcommand "server", Kamal::Cli::Server
 
-  desc "traefik", "Manage Traefik load balancer"
-  subcommand "traefik", Kamal::Cli::Traefik
+  desc "proxy", "Manage load balancer proxy"
+  subcommand "proxy", Kamal::Cli::Proxy
 
   private
     def container_available?(version)

lib/kamal/cli/proxy.rb

@@ -0,0 +1,120 @@
+class Kamal::Cli::Proxy < Kamal::Cli::Base
+  desc "boot", "Boot proxy on servers"
+  def boot
+    mutating do
+      on(KAMAL.proxy_hosts) do
+        execute *KAMAL.registry.login
+        execute *KAMAL.proxy.start_or_run
+      end
+    end
+  end
+
+  desc "reboot", "Reboot proxy on servers (stop container, remove container, start new container)"
+  option :rolling, type: :boolean, default: false, desc: "Reboot proxy on hosts in sequence, rather than in parallel"
+  option :confirmed, aliases: "-y", type: :boolean, default: false, desc: "Proceed without confirmation question"
+  def reboot
+    confirming "This will cause a brief outage on each host. Are you sure?" do
+      mutating do
+        host_groups = options[:rolling] ? KAMAL.proxy_hosts : [ KAMAL.proxy_hosts ]
+        host_groups.each do |hosts|
+          host_list = Array(hosts).join(",")
+          run_hook "pre-proxy-reboot", hosts: host_list
+          on(hosts) do
+            execute *KAMAL.auditor.record("Rebooted proxy"), verbosity: :debug
+            execute *KAMAL.registry.login
+            execute *KAMAL.proxy.stop, raise_on_non_zero_exit: false
+            execute *KAMAL.proxy.remove_container
+            execute *KAMAL.proxy.run
+          end
+          run_hook "post-proxy-reboot", hosts: host_list
+        end
+      end
+    end
+  end
+
+  desc "start", "Start existing proxy container on servers"
+  def start
+    mutating do
+      on(KAMAL.proxy_hosts) do
+        execute *KAMAL.auditor.record("Started proxy"), verbosity: :debug
+        execute *KAMAL.proxy.start
+      end
+    end
+  end
+
+  desc "stop", "Stop existing proxy container on servers"
+  def stop
+    mutating do
+      on(KAMAL.proxy_hosts) do
+        execute *KAMAL.auditor.record("Stopped proxy"), verbosity: :debug
+        execute *KAMAL.proxy.stop, raise_on_non_zero_exit: false
+      end
+    end
+  end
+
+  desc "restart", "Restart existing proxy container on servers"
+  def restart
+    mutating do
+      stop
+      start
+    end
+  end
+
+  desc "details", "Show details about proxy container from servers"
+  def details
+    on(KAMAL.proxy_hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.proxy.info), type: "Proxy" }
+  end
+
+  desc "logs", "Show log lines from proxy on servers"
+  option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
+  option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
+  option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
+  option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
+  def logs
+    grep = options[:grep]
+
+    if options[:follow]
+      run_locally do
+        info "Following logs on #{KAMAL.primary_host}..."
+        info KAMAL.proxy.follow_logs(host: KAMAL.primary_host, grep: grep)
+        exec KAMAL.proxy.follow_logs(host: KAMAL.primary_host, grep: grep)
+      end
+    else
+      since = options[:since]
+      lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
+
+      on(KAMAL.proxy_hosts) do |host|
+        puts_by_host host, capture(*KAMAL.proxy.logs(since: since, lines: lines, grep: grep)), type: "Proxy"
+      end
+    end
+  end
+
+  desc "remove", "Remove proxy container and image from servers"
+  def remove
+    mutating do
+      stop
+      remove_container
+      remove_image
+    end
+  end
+
+  desc "remove_container", "Remove proxy container from servers", hide: true
+  def remove_container
+    mutating do
+      on(KAMAL.proxy_hosts) do
+        execute *KAMAL.auditor.record("Removed proxy container"), verbosity: :debug
+        execute *KAMAL.proxy.remove_container
+      end
+    end
+  end
+
+  desc "remove_image", "Remove proxy image from servers", hide: true
+  def remove_image
+    mutating do
+      on(KAMAL.proxy_hosts) do
+        execute *KAMAL.auditor.record("Removed proxy image"), verbosity: :debug
+        execute *KAMAL.proxy.remove_image
+      end
+    end
+  end
+end

lib/kamal/cli/prune.rb

@@ -18,12 +18,16 @@ class Kamal::Cli::Prune < Kamal::Cli::Base
     end
   end
 
-  desc "containers", "Prune all stopped containers, except the last 5"
+  desc "containers", "Prune all stopped containers, except the last n (default 5)"
+  option :retain, type: :numeric, default: nil, desc: "Number of containers to retain"
   def containers
+    retain = options.fetch(:retain, KAMAL.config.retain_containers)
+    raise "retain must be at least 1" if retain < 1
+
     mutating do
       on(KAMAL.hosts) do
         execute *KAMAL.auditor.record("Pruned containers"), verbosity: :debug
-        execute *KAMAL.prune.app_containers
+        execute *KAMAL.prune.app_containers(retain: retain)
         execute *KAMAL.prune.healthcheck_containers
       end
     end

lib/kamal/cli/server.rb

@@ -14,10 +14,20 @@ class Kamal::Cli::Server < Kamal::Cli::Base
       end
 
       execute(*KAMAL.server.ensure_run_directory)
+
+      begin
+        execute(*KAMAL.docker.create_kamal_network)
+      rescue SSHKit::Command::Failed => e
+        if e.message !~ /network with name kamal already exists/
+          raise
+        end
+      end
     end
 
     if missing.any?
-      raise "Docker is not installed on #{missing.join(", ")} and can't be automatically installed without having root access and the `curl` command available. Install Docker manually: https://docs.docker.com/engine/install/"
+      raise "Docker is not installed on #{missing.join(", ")} and can't be automatically installed without having root access and either `wget` or `curl`. Install Docker manually: https://docs.docker.com/engine/install/"
     end
+
+    run_hook "docker-setup"
   end
 end

lib/kamal/cli/templates/deploy.yml

@@ -63,12 +63,6 @@ registry:
 #     directories:
 #       - data:/data
 
-# Configure custom arguments for Traefik
-# traefik:
-#   args:
-#     accesslog: true
-#     accesslog.format: json
-
 # Configure a custom healthcheck (default is /up on port 3000)
 # healthcheck:
 #   path: /healthz
@@ -77,9 +71,25 @@ registry:
 # Bridge fingerprinted assets, like JS and CSS, between versions to avoid
 # hitting 404 on in-flight requests. Combines all files from new and old
 # version inside the asset_path.
+#
+# If your app is using the Sprockets gem, ensure it sets `config.assets.manifest`.
+# See https://github.com/basecamp/kamal/issues/626 for details
+#
 # asset_path: /rails/public/assets
 
 # Configure rolling deploys by setting a wait time between batches of restarts.
 # boot:
 #   limit: 10 # Can also specify as a percentage of total hosts, such as "25%"
 #   wait: 2
+
+# Configure the role used to determine the primary_host. This host takes
+# deploy locks, runs health checks during the deploy, and follow logs, etc.
+#
+# Caution: there's no support for role renaming yet, so be careful to cleanup
+#          the previous role on the deployed hosts.
+# primary_role: web
+
+# Controls if we abort when see a role with no hosts. Disabling this may be
+# useful for more complex deploy configurations.
+#
+# allow_empty_roles: false

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

@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+
+# A sample docker-setup hook
+#
+# Sets up a Docker network which can then be used by the application’s containers
+
+ssh user@example.com docker network create kamal

lib/kamal/cli/templates/sample_hooks/post-traefik-reboot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Rebooted proxy on $KAMAL_HOSTS"

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

@@ -32,7 +32,7 @@ fi
 current_branch=$(git branch --show-current)
 
 if [ -z "$current_branch" ]; then
-  echo "No git remote set, aborting..." >&2
+  echo "Not on a git branch, aborting..." >&2
   exit 1
 fi
 

lib/kamal/cli/templates/sample_hooks/pre-traefik-reboot.sample

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "Rebooting proxy on $KAMAL_HOSTS..."

lib/kamal/cli/traefik.rb

@@ -1,111 +0,0 @@
-class Kamal::Cli::Traefik < Kamal::Cli::Base
-  desc "boot", "Boot Traefik on servers"
-  def boot
-    mutating do
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.registry.login
-        execute *KAMAL.traefik.start_or_run
-      end
-    end
-  end
-
-  desc "reboot", "Reboot Traefik on servers (stop container, remove container, start new container)"
-  option :rolling, type: :boolean, default: false, desc: "Reboot traefik on hosts in sequence, rather than in parallel"
-  def reboot
-    mutating do
-      on(KAMAL.traefik_hosts, in: options[:rolling] ? :sequence : :parallel) do
-        execute *KAMAL.auditor.record("Rebooted traefik"), verbosity: :debug
-        execute *KAMAL.registry.login
-        execute *KAMAL.traefik.stop
-        execute *KAMAL.traefik.remove_container
-        execute *KAMAL.traefik.run
-      end
-    end
-  end
-
-  desc "start", "Start existing Traefik container on servers"
-  def start
-    mutating do
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.auditor.record("Started traefik"), verbosity: :debug
-        execute *KAMAL.traefik.start
-      end
-    end
-  end
-
-  desc "stop", "Stop existing Traefik container on servers"
-  def stop
-    mutating do
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.auditor.record("Stopped traefik"), verbosity: :debug
-        execute *KAMAL.traefik.stop
-      end
-    end
-  end
-
-  desc "restart", "Restart existing Traefik container on servers"
-  def restart
-    mutating do
-      stop
-      start
-    end
-  end
-
-  desc "details", "Show details about Traefik container from servers"
-  def details
-    on(KAMAL.traefik_hosts) { |host| puts_by_host host, capture_with_info(*KAMAL.traefik.info), type: "Traefik" }
-  end
-
-  desc "logs", "Show log lines from Traefik on servers"
-  option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
-  option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
-  option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
-  option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
-  def logs
-    grep = options[:grep]
-
-    if options[:follow]
-      run_locally do
-        info "Following logs on #{KAMAL.primary_host}..."
-        info KAMAL.traefik.follow_logs(host: KAMAL.primary_host, grep: grep)
-        exec KAMAL.traefik.follow_logs(host: KAMAL.primary_host, grep: grep)
-      end
-    else
-      since = options[:since]
-      lines = options[:lines].presence || ((since || grep) ? nil : 100) # Default to 100 lines if since or grep isn't set
-
-      on(KAMAL.traefik_hosts) do |host|
-        puts_by_host host, capture(*KAMAL.traefik.logs(since: since, lines: lines, grep: grep)), type: "Traefik"
-      end
-    end
-  end
-
-  desc "remove", "Remove Traefik container and image from servers"
-  def remove
-    mutating do
-      stop
-      remove_container
-      remove_image
-    end
-  end
-
-  desc "remove_container", "Remove Traefik container from servers", hide: true
-  def remove_container
-    mutating do
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.auditor.record("Removed traefik container"), verbosity: :debug
-        execute *KAMAL.traefik.remove_container
-      end
-    end
-  end
-
-  desc "remove_image", "Remove Traefik image from servers", hide: true
-  def remove_image
-    mutating do
-      on(KAMAL.traefik_hosts) do
-        execute *KAMAL.auditor.record("Removed traefik image"), verbosity: :debug
-        execute *KAMAL.traefik.remove_image
-      end
-    end
-  end
-end

lib/kamal/commander.rb

@@ -24,19 +24,36 @@ class Kamal::Commander
   attr_reader :specific_roles, :specific_hosts
 
   def specific_primary!
-    self.specific_hosts = [ config.primary_web_host ]
+    self.specific_hosts = [ config.primary_host ]
   end
 
   def specific_roles=(role_names)
-    @specific_roles = config.roles.select { |r| role_names.include?(r.name) } if role_names.present?
+    if role_names.present?
+      @specific_roles = Kamal::Utils.filter_specific_items(role_names, config.roles)
+
+      if @specific_roles.empty?
+        raise ArgumentError, "No --roles match for #{role_names.join(',')}"
+      end
+
+      @specific_roles
+    end
   end
 
   def specific_hosts=(hosts)
-    @specific_hosts = config.all_hosts & hosts if hosts.present?
+    if hosts.present?
+      @specific_hosts = Kamal::Utils.filter_specific_items(hosts, config.all_hosts)
+
+      if @specific_hosts.empty?
+        raise ArgumentError, "No --hosts match for #{hosts.join(',')}"
+      end
+
+      @specific_hosts
+    end
   end
 
   def primary_host
-    specific_hosts&.first || specific_roles&.first&.primary_host || config.primary_web_host
+    # Given a list of specific roles, make an effort to match up with the primary_role
+    specific_hosts&.first || specific_roles&.detect { |role| role == config.primary_role }&.primary_host || specific_roles&.first&.primary_host || config.primary_host
   end
 
   def primary_role
@@ -56,11 +73,11 @@ class Kamal::Commander
   end
 
   def roles_on(host)
-    roles.select { |role| role.hosts.include?(host.to_s) }.map(&:name)
+    roles.select { |role| role.hosts.include?(host.to_s) }
   end
 
-  def traefik_hosts
-    specific_hosts || config.traefik_hosts
+  def proxy_hosts
+    specific_hosts || config.proxy_hosts
   end
 
   def accessory_hosts
@@ -120,8 +137,8 @@ class Kamal::Commander
     @server ||= Kamal::Commands::Server.new(config)
   end
 
-  def traefik
-    @traefik ||= Kamal::Commands::Traefik.new(config)
+  def proxy
+    @proxy ||= Kamal::Commands::Proxy.new(config)
   end
 
 

lib/kamal/commands/accessory.rb

@@ -99,11 +99,11 @@ class Kamal::Commands::Accessory < Kamal::Commands::Base
   end
 
   def make_env_directory
-    make_directory accessory_config.host_env_directory
+    make_directory accessory_config.env.secrets_directory
   end
 
   def remove_env_file
-    [:rm, "-f", accessory_config.host_env_file_path]
+    [ :rm, "-f", accessory_config.env.secrets_file ]
   end
 
   private

lib/kamal/commands/app.rb

@@ -1,14 +1,13 @@
 class Kamal::Commands::App < Kamal::Commands::Base
-  include Assets, Containers, Cord, Execution, Images, Logging
+  include Assets, Containers, Execution, Images, Logging
 
   ACTIVE_DOCKER_STATUSES = [ :running, :restarting ]
 
-  attr_reader :role, :role_config
+  attr_reader :role, :role
 
   def initialize(config, role: nil)
     super(config)
     @role = role
-    @role_config = config.role(self.role)
   end
 
   def run(hostname: nil)
@@ -16,18 +15,19 @@ class Kamal::Commands::App < Kamal::Commands::Base
       "--detach",
       "--restart unless-stopped",
       "--name", container_name,
-      *(["--hostname", hostname] if hostname),
+      "--network kamal",
+      *([ "--hostname", hostname ] if hostname),
       "-e", "KAMAL_CONTAINER_NAME=\"#{container_name}\"",
       "-e", "KAMAL_VERSION=\"#{config.version}\"",
-      *role_config.env_args,
-      *role_config.health_check_args,
-      *config.logging_args,
+      *role.env_args,
+      *role.health_check_args,
+      *role.logging_args,
       *config.volume_args,
-      *role_config.asset_volume_args,
-      *role_config.label_args,
-      *role_config.option_args,
+      *role.asset_volume_args,
+      *role.label_args,
+      *role.option_args,
       config.absolute_image,
-      role_config.cmd
+      role.cmd
   end
 
   def start
@@ -57,6 +57,10 @@ class Kamal::Commands::App < Kamal::Commands::Base
     container_id_for(container_name: container_name(version), only_running: only_running)
   end
 
+  def container_name(version = nil)
+    [ role.container_prefix, version || config.version ].compact.join("-")
+  end
+
   def current_running_version
     list_versions("--latest", statuses: ACTIVE_DOCKER_STATUSES)
   end
@@ -64,32 +68,24 @@ class Kamal::Commands::App < Kamal::Commands::Base
   def list_versions(*docker_args, statuses: nil)
     pipe \
       docker(:ps, *filter_args(statuses: statuses), *docker_args, "--format", '"{{.Names}}"'),
-      %(while read line; do echo ${line##{role_config.container_prefix}-}; done) # Extract SHA from "service-role-dest-SHA"
+      %(while read line; do echo ${line##{role.container_prefix}-}; done) # Extract SHA from "service-role-dest-SHA"
   end
 
 
   def make_env_directory
-    make_directory role_config.host_env_directory
+    make_directory role.env.secrets_directory
   end
 
   def remove_env_file
-    [ :rm, "-f", role_config.host_env_file_path ]
+    [ :rm, "-f", role.env.secrets_file ]
   end
 
 
   private
-    def container_name(version = nil)
-      [ role_config.container_prefix, version || config.version ].compact.join("-")
-    end
-
     def filter_args(statuses: nil)
       argumentize "--filter", filters(statuses: statuses)
     end
 
-    def service_role_dest
-      [ config.service, role, config.destination ].compact.join("-")
-    end
-
     def filters(statuses: nil)
       [ "label=service=#{config.service}" ].tap do |filters|
         filters << "label=destination=#{config.destination}" if config.destination

lib/kamal/commands/app/assets.rb

@@ -1,23 +1,23 @@
 module Kamal::Commands::App::Assets
   def extract_assets
-    asset_container = "#{role_config.container_prefix}-assets"
+    asset_container = "#{role.container_prefix}-assets"
 
     combine \
-      make_directory(role_config.asset_extracted_path),
-      [*docker(:stop, "-t 1", asset_container, "2> /dev/null"), "|| true"],
+      make_directory(role.asset_extracted_path),
+      [ *docker(:stop, "-t 1", asset_container, "2> /dev/null"), "|| true" ],
       docker(:run, "--name", asset_container, "--detach", "--rm", config.latest_image, "sleep 1000000"),
-      docker(:cp, "-L", "#{asset_container}:#{role_config.asset_path}/.", role_config.asset_extracted_path),
+      docker(:cp, "-L", "#{asset_container}:#{role.asset_path}/.", role.asset_extracted_path),
       docker(:stop, "-t 1", asset_container),
       by: "&&"
   end
 
   def sync_asset_volumes(old_version: nil)
-    new_extracted_path, new_volume_path = role_config.asset_extracted_path(config.version), role_config.asset_volume.host_path
+    new_extracted_path, new_volume_path = role.asset_extracted_path(config.version), role.asset_volume.host_path
     if old_version.present?
-      old_extracted_path, old_volume_path = role_config.asset_extracted_path(old_version), role_config.asset_volume(old_version).host_path
+      old_extracted_path, old_volume_path = role.asset_extracted_path(old_version), role.asset_volume(old_version).host_path
     end
 
-    commands = [make_directory(new_volume_path), copy_contents(new_extracted_path, new_volume_path)]
+    commands = [ make_directory(new_volume_path), copy_contents(new_extracted_path, new_volume_path) ]
 
     if old_version.present?
       commands << copy_contents(new_extracted_path, old_volume_path, continue_on_error: true)
@@ -29,8 +29,8 @@ module Kamal::Commands::App::Assets
 
   def clean_up_assets
     chain \
-      find_and_remove_older_siblings(role_config.asset_extracted_path),
-      find_and_remove_older_siblings(role_config.asset_volume_path)
+      find_and_remove_older_siblings(role.asset_extracted_path),
+      find_and_remove_older_siblings(role.asset_volume_path)
   end
 
   private
@@ -39,13 +39,13 @@ module Kamal::Commands::App::Assets
         :find,
         Pathname.new(path).dirname.to_s,
         "-maxdepth 1",
-        "-name", "'#{role_config.container_prefix}-*'",
+        "-name", "'#{role.container_prefix}-*'",
         "!", "-name", Pathname.new(path).basename.to_s,
         "-exec rm -rf \"{}\" +"
       ]
     end
 
     def copy_contents(source, destination, continue_on_error: false)
-      [ :cp, "-rnT", "#{source}", destination, *("|| true" if continue_on_error)]
+      [ :cp, "-rnT", "#{source}", destination, *("|| true" if continue_on_error) ]
     end
 end

lib/kamal/commands/app/cord.rb

@@ -1,22 +0,0 @@
-module Kamal::Commands::App::Cord
-  def cord(version:)
-    pipe \
-      docker(:inspect, "-f '{{ range .Mounts }}{{printf \"%s %s\\n\" .Source .Destination}}{{ end }}'", container_name(version)),
-      [:awk, "'$2 == \"#{role_config.cord_volume.container_path}\" {print $1}'"]
-  end
-
-  def tie_cord(cord)
-    create_empty_file(cord)
-  end
-
-  def cut_cord(cord)
-    remove_directory(cord)
-  end
-  
-  private    
-    def create_empty_file(file)
-      chain \
-        make_directory_for(file),
-        [:touch, file]
-    end
-end

lib/kamal/commands/app/execution.rb

@@ -10,9 +10,9 @@ module Kamal::Commands::App::Execution
     docker :run,
       ("-it" if interactive),
       "--rm",
-      *role_config&.env_args,
+      *role&.env_args,
       *config.volume_args,
-      *role_config&.option_args,
+      *role&.option_args,
       config.absolute_image,
       *command
   end

lib/kamal/commands/app/logging.rb

@@ -6,11 +6,11 @@ module Kamal::Commands::App::Logging
       ("grep '#{grep}'" if grep)
   end
 
-  def follow_logs(host:, grep: nil)
+  def follow_logs(host:, lines: nil, grep: nil)
     run_over_ssh \
       pipe(
         current_running_container_id,
-        "xargs docker logs --timestamps --tail 10 --follow 2>&1",
+        "xargs docker logs --timestamps#{" --tail #{lines}" if lines} --follow 2>&1",
         (%(grep "#{grep}") if grep)
       ),
       host: host

lib/kamal/commands/base.rb

@@ -18,7 +18,7 @@ module Kamal::Commands
         elsif config.ssh.proxy && config.ssh.proxy.is_a?(Net::SSH::Proxy::Command)
           cmd << " -o ProxyCommand='#{config.ssh.proxy.command_line_template}'"
         end
-        cmd << " -t #{config.ssh.user}@#{host} '#{command.join(" ")}'"
+        cmd << " -t #{config.ssh.user}@#{host} -p #{config.ssh.port} '#{command.join(" ")}'"
       end
     end
 
@@ -62,14 +62,26 @@ module Kamal::Commands
         combine *commands, by: ">"
       end
 
+      def any(*commands)
+        combine *commands, by: "||"
+      end
+
       def xargs(command)
         [ :xargs, command ].flatten
       end
 
+      def shell(command)
+        [ :sh, "-c", "'#{command.flatten.join(" ").gsub("'", "'\\''")}'" ]
+      end
+
       def docker(*args)
         args.compact.unshift :docker
       end
 
+      def git(*args)
+        args.compact.unshift :git
+      end
+
       def tags(**details)
         Kamal::Tags.from_config(config, **details)
       end

lib/kamal/commands/builder/base.rb

@@ -3,7 +3,7 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   class BuilderError < StandardError; end
 
   delegate :argumentize, to: Kamal::Utils
-  delegate :args, :secrets, :dockerfile, :local_arch, :local_host, :remote_arch, :remote_host, :cache_from, :cache_to, to: :builder_config
+  delegate :args, :secrets, :dockerfile, :local_arch, :local_host, :remote_arch, :remote_host, :cache_from, :cache_to, :ssh, :git_archive?, to: :builder_config
 
   def clean
     docker :image, :rm, "--force", config.absolute_image
@@ -13,8 +13,18 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
     docker :pull, config.absolute_image
   end
 
+  def push
+    if git_archive?
+      pipe \
+        git(:archive, "--format=tar", :HEAD),
+        build_and_push
+    else
+      build_and_push
+    end
+  end
+
   def build_options
-    [ *build_tags, *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile ]
+    [ *build_tags, *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile, *build_ssh ]
   end
 
   def build_context
@@ -24,7 +34,10 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   def validate_image
     pipe \
       docker(:inspect, "-f", "'{{ .Config.Labels.service }}'", config.absolute_image),
-      [:grep, "-x", config.service, "||", "(echo \"Image #{config.absolute_image} is missing the `service` label\" && exit 1)"]
+      any(
+        [ :grep, "-x", config.service ],
+        "(echo \"Image #{config.absolute_image} is missing the 'service' label\" && exit 1)"
+      )
   end
 
 
@@ -35,8 +48,8 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
 
     def build_cache
       if cache_to && cache_from
-        ["--cache-to", cache_to,
-          "--cache-from", cache_from]
+        [ "--cache-to", cache_to,
+          "--cache-from", cache_from ]
       end
     end
 
@@ -60,6 +73,10 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
       end
     end
 
+    def build_ssh
+      argumentize "--ssh", ssh if ssh.present?
+    end
+
     def builder_config
       config.builder
     end

lib/kamal/commands/builder/multiarch.rb

@@ -7,15 +7,6 @@ class Kamal::Commands::Builder::Multiarch < Kamal::Commands::Builder::Base
     docker :buildx, :rm, builder_name
   end
 
-  def push
-    docker :buildx, :build,
-      "--push",
-      "--platform", "linux/amd64,linux/arm64",
-      "--builder", builder_name,
-      *build_options,
-      build_context
-  end
-
   def info
     combine \
       docker(:context, :ls),
@@ -26,4 +17,21 @@ class Kamal::Commands::Builder::Multiarch < Kamal::Commands::Builder::Base
     def builder_name
       "kamal-#{config.service}-multiarch"
     end
+
+    def platform_names
+      if local_arch
+        "linux/#{local_arch}"
+      else
+        "linux/amd64,linux/arm64"
+      end
+    end
+
+    def build_and_push
+      docker :buildx, :build,
+        "--push",
+        "--platform", platform_names,
+        "--builder", builder_name,
+        *build_options,
+        build_context
+    end
 end

lib/kamal/commands/builder/native.rb

@@ -7,14 +7,15 @@ class Kamal::Commands::Builder::Native < Kamal::Commands::Builder::Base
     # No-op on native without cache
   end
 
-  def push
-    combine \
-      docker(:build, *build_options, build_context),
-      docker(:push, config.absolute_image),
-      docker(:push, config.latest_image)
-  end
-
   def info
     # No-op on native
   end
+
+  private
+    def build_and_push
+      combine \
+        docker(:build, *build_options, build_context),
+        docker(:push, config.absolute_image),
+        docker(:push, config.latest_image)
+    end
 end

lib/kamal/commands/builder/native/cached.rb

@@ -7,10 +7,11 @@ class Kamal::Commands::Builder::Native::Cached < Kamal::Commands::Builder::Nativ
     docker :buildx, :rm, builder_name
   end
 
-  def push
-    docker :buildx, :build,
-      "--push",
-      *build_options,
-      build_context
-  end
+  private
+    def build_and_push
+      docker :buildx, :build,
+        "--push",
+        *build_options,
+        build_context
+    end
 end

lib/kamal/commands/builder/native/remote.rb

@@ -11,15 +11,6 @@ class Kamal::Commands::Builder::Native::Remote < Kamal::Commands::Builder::Nativ
       remove_buildx
   end
 
-  def push
-    docker :buildx, :build,
-      "--push",
-      "--platform", platform,
-      "--builder", builder_name,
-      *build_options,
-      build_context
-  end
-
   def info
     chain \
       docker(:context, :ls),
@@ -56,4 +47,13 @@ class Kamal::Commands::Builder::Native::Remote < Kamal::Commands::Builder::Nativ
     def remove_buildx
       docker :buildx, :rm, builder_name
     end
+
+    def build_and_push
+      docker :buildx, :build,
+      "--push",
+      "--platform", platform,
+      "--builder", builder_name,
+      *build_options,
+      build_context
+    end
 end

lib/kamal/commands/docker.rb

@@ -1,7 +1,7 @@
 class Kamal::Commands::Docker < Kamal::Commands::Base
   # Install Docker using the https://github.com/docker/docker-install convenience script.
   def install
-    pipe [ :curl, "-fsSL", "https://get.docker.com" ], :sh
+    pipe get_docker, :sh
   end
 
   # Checks the Docker client version. Fails if Docker is not installed.
@@ -18,4 +18,17 @@ class Kamal::Commands::Docker < Kamal::Commands::Base
   def superuser?
     [ '[ "${EUID:-$(id -u)}" -eq 0 ] || command -v sudo >/dev/null || command -v su >/dev/null' ]
   end
+
+  def create_kamal_network
+    docker :network, :create, :kamal
+  end
+
+  private
+    def get_docker
+      shell \
+        any \
+          [ :curl, "-fsSL", "https://get.docker.com" ],
+          [ :wget, "-O -", "https://get.docker.com" ],
+          [ :echo, "\"exit 1\"" ]
+    end
 end

lib/kamal/commands/healthcheck.rb

@@ -1,7 +1,6 @@
 class Kamal::Commands::Healthcheck < Kamal::Commands::Base
-
   def run
-    web = config.role(:web)
+    primary = config.role(config.primary_role)
 
     docker :run,
       "--detach",
@@ -9,12 +8,12 @@ class Kamal::Commands::Healthcheck < Kamal::Commands::Base
       "--publish", "#{exposed_port}:#{config.healthcheck["port"]}",
       "--label", "service=#{config.healthcheck_service}",
       "-e", "KAMAL_CONTAINER_NAME=\"#{config.healthcheck_service}\"",
-      *web.env_args,
-      *web.health_check_args(cord: false),
+      *primary.env_args,
+      *primary.health_check_args,
       *config.volume_args,
-      *web.option_args,
+      *primary.option_args,
       config.absolute_image,
-      web.cmd
+      primary.cmd
   end
 
   def status

lib/kamal/commands/lock.rb

@@ -1,17 +1,18 @@
 require "active_support/duration"
 require "time"
+require "base64"
 
 class Kamal::Commands::Lock < Kamal::Commands::Base
   def acquire(message, version)
     combine \
-      [:mkdir, lock_dir],
+      [ :mkdir, lock_dir ],
       write_lock_details(message, version)
   end
 
   def release
     combine \
-      [:rm, lock_details_file],
-      [:rm, "-r", lock_dir]
+      [ :rm, lock_details_file ],
+      [ :rm, "-r", lock_dir ]
   end
 
   def status
@@ -20,31 +21,41 @@ class Kamal::Commands::Lock < Kamal::Commands::Base
       read_lock_details
   end
 
+  def ensure_locks_directory
+    [ :mkdir, "-p", locks_dir ]
+  end
+
   private
     def write_lock_details(message, version)
       write \
-        [:echo, "\"#{Base64.encode64(lock_details(message, version))}\""],
+        [ :echo, "\"#{Base64.encode64(lock_details(message, version))}\"" ],
         lock_details_file
     end
 
     def read_lock_details
       pipe \
-        [:cat, lock_details_file],
-        [:base64, "-d"]
+        [ :cat, lock_details_file ],
+        [ :base64, "-d" ]
     end
 
     def stat_lock_dir
       write \
-        [:stat, lock_dir],
+        [ :stat, lock_dir ],
         "/dev/null"
     end
 
+    def locks_dir
+      File.join(config.run_directory, "locks")
+    end
+
     def lock_dir
-      "#{config.run_directory}/lock-#{config.service}"
+      dir_name = [ config.service, config.destination ].compact.join("-")
+
+      File.join(locks_dir, dir_name)
     end
 
     def lock_details_file
-      [lock_dir, :details].join("/")
+      File.join(lock_dir, "details")
     end
 
     def lock_details(message, version)

lib/kamal/commands/proxy.rb

@@ -0,0 +1,116 @@
+class Kamal::Commands::Proxy < Kamal::Commands::Base
+  CONTAINER_PORT = 80
+
+  delegate :argumentize, :optionize, to: Kamal::Utils
+
+  DEFAULT_IMAGE = "dmcbreen/mproxy:latest"
+
+  def run
+    docker :run,
+      "--name", container_name,
+      "--detach",
+      "--restart", "unless-stopped",
+      "--network kamal",
+      *publish_args,
+      "--volume", "/var/run/docker.sock:/var/run/docker.sock",
+      *config.logging_args,
+      *label_args,
+      *docker_options_args,
+      image,
+      *cmd_option_args
+  end
+
+  def start
+    docker :container, :start, container_name
+  end
+
+  def stop
+    docker :container, :stop, container_name
+  end
+
+  def start_or_run
+    combine start, run, by: "||"
+  end
+
+  def deploy(version)
+    docker :exec, container_name, :mproxy, :deploy, version
+  end
+
+  def remove(version)
+    docker :exec, container_name, :mproxy, :remove, version
+  end
+
+  def info
+    docker :ps, "--filter", "name=^#{container_name}$"
+  end
+
+  def logs(since: nil, lines: nil, grep: nil)
+    pipe \
+      docker(:logs, container_name, (" --since #{since}" if since), (" --tail #{lines}" if lines), "--timestamps", "2>&1"),
+      ("grep '#{grep}'" if grep)
+  end
+
+  def follow_logs(host:, grep: nil)
+    run_over_ssh pipe(
+      docker(:logs, container_name, "--timestamps", "--tail", "10", "--follow", "2>&1"),
+      (%(grep "#{grep}") if grep)
+    ).join(" "), host: host
+  end
+
+  def remove_container
+    docker :container, :prune, "--force", "--filter", container_filter
+  end
+
+  def remove_image
+    docker :image, :prune, "--all", "--force", "--filter", image_filter
+  end
+
+  def port
+    "#{host_port}:#{CONTAINER_PORT}"
+  end
+
+  private
+    def container_filter
+      "label=org.opencontainers.image.title=mproxy"
+    end
+
+    def image_filter
+      "label=org.opencontainers.image.title=mproxy"
+    end
+
+    def publish_args
+      argumentize "--publish", port unless config.proxy["publish"] == false
+    end
+
+    def label_args
+      argumentize "--label", labels
+    end
+
+    def labels
+      config.proxy["labels"] || {}
+    end
+
+    def image
+      config.proxy.fetch("image") { DEFAULT_IMAGE }
+    end
+
+    def docker_options_args
+      optionize(config.proxy["options"] || {})
+    end
+
+    def cmd_option_args
+      optionize cmd_args, with: "="
+    end
+
+    def cmd_args
+      config.proxy["args"] || {}
+    end
+
+    def host_port
+      config.proxy["host_port"] || CONTAINER_PORT
+    end
+
+    def container_name
+      "mproxy"
+    end
+end

lib/kamal/commands/prune.rb

@@ -13,10 +13,10 @@ class Kamal::Commands::Prune < Kamal::Commands::Base
       "while read image tag; do docker rmi $tag; done"
   end
 
-  def app_containers(keep_last: 5)
+  def app_containers(retain:)
     pipe \
       docker(:ps, "-q", "-a", *service_filter, *stopped_containers_filters),
-      "tail -n +#{keep_last + 1}",
+      "tail -n +#{retain + 1}",
       "while read container_id; do docker rm $container_id; done"
   end
 
@@ -26,7 +26,7 @@ class Kamal::Commands::Prune < Kamal::Commands::Base
 
   private
     def stopped_containers_filters
-      [ "created", "exited", "dead" ].flat_map { |status| ["--filter", "status=#{status}"] }
+      [ "created", "exited", "dead" ].flat_map { |status| [ "--filter", "status=#{status}" ] }
     end
 
     def active_image_list
@@ -43,4 +43,4 @@ class Kamal::Commands::Prune < Kamal::Commands::Base
     def healthcheck_service_filter
       [ "--filter", "label=service=#{config.healthcheck_service}" ]
     end
-  end
+end

lib/kamal/commands/registry.rb

@@ -2,7 +2,10 @@ class Kamal::Commands::Registry < Kamal::Commands::Base
   delegate :registry, to: :config
 
   def login
-    docker :login, registry["server"], "-u", sensitive(lookup("username")), "-p", sensitive(lookup("password"))
+    docker :login,
+      registry["server"],
+      "-u", sensitive(Kamal::Utils.escape_shell_value(lookup("username"))),
+      "-p", sensitive(Kamal::Utils.escape_shell_value(lookup("password")))
   end
 
   def logout

lib/kamal/commands/server.rb

@@ -1,5 +1,5 @@
 class Kamal::Commands::Server < Kamal::Commands::Base
   def ensure_run_directory
-    [:mkdir, "-p", config.run_directory]
+    [ :mkdir, "-p", config.run_directory ]
   end
 end

lib/kamal/commands/traefik.rb

@@ -1,130 +0,0 @@
-class Kamal::Commands::Traefik < Kamal::Commands::Base
-  delegate :argumentize, :optionize, to: Kamal::Utils
-
-  DEFAULT_IMAGE = "traefik:v2.9"
-  CONTAINER_PORT = 80
-  DEFAULT_ARGS = {
-    'log.level' => 'DEBUG'
-  }
-  DEFAULT_LABELS = {
-    # These ensure we serve a 502 rather than a 404 if no containers are available
-    "traefik.http.routers.catchall.entryPoints" => "http",
-    "traefik.http.routers.catchall.rule" => "PathPrefix(`/`)",
-    "traefik.http.routers.catchall.service" => "unavailable",
-    "traefik.http.routers.catchall.priority" => 1,
-    "traefik.http.services.unavailable.loadbalancer.server.port" => "0"
-  }
-
-  def run
-    docker :run, "--name traefik",
-      "--detach",
-      "--restart", "unless-stopped",
-      *publish_args,
-      "--volume", "/var/run/docker.sock:/var/run/docker.sock",
-      *env_args,
-      *config.logging_args,
-      *label_args,
-      *docker_options_args,
-      image,
-      "--providers.docker",
-      *cmd_option_args
-  end
-
-  def start
-    docker :container, :start, "traefik"
-  end
-
-  def stop
-    docker :container, :stop, "traefik"
-  end
-
-  def start_or_run
-    combine start, run, by: "||"
-  end
-
-  def info
-    docker :ps, "--filter", "name=^traefik$"
-  end
-
-  def logs(since: nil, lines: nil, grep: nil)
-    pipe \
-      docker(:logs, "traefik", (" --since #{since}" if since), (" --tail #{lines}" if lines), "--timestamps", "2>&1"),
-      ("grep '#{grep}'" if grep)
-  end
-
-  def follow_logs(host:, grep: nil)
-    run_over_ssh pipe(
-      docker(:logs, "traefik", "--timestamps", "--tail", "10", "--follow", "2>&1"),
-      (%(grep "#{grep}") if grep)
-    ).join(" "), host: host
-  end
-
-  def remove_container
-    docker :container, :prune, "--force", "--filter", "label=org.opencontainers.image.title=Traefik"
-  end
-
-  def remove_image
-    docker :image, :prune, "--all", "--force", "--filter", "label=org.opencontainers.image.title=Traefik"
-  end
-
-  def port
-    "#{host_port}:#{CONTAINER_PORT}"
-  end
-
-  def env_file
-    Kamal::EnvFile.new(config.traefik.fetch("env", {}))
-  end
-
-  def host_env_file_path
-    File.join host_env_directory, "traefik.env"
-  end
-
-  def make_env_directory
-    make_directory(host_env_directory)
-  end
-
-  def remove_env_file
-    [:rm, "-f", host_env_file_path]
-  end
-
-  private
-    def publish_args
-      argumentize "--publish", port unless config.traefik["publish"] == false
-    end
-
-    def label_args
-      argumentize "--label", labels
-    end
-
-    def env_args
-      argumentize "--env-file", host_env_file_path
-    end
-
-    def host_env_directory
-      File.join config.host_env_directory, "traefik"
-    end
-
-    def labels
-      DEFAULT_LABELS.merge(config.traefik["labels"] || {})
-    end
-
-    def image
-      config.traefik.fetch("image") { DEFAULT_IMAGE }
-    end
-
-    def docker_options_args
-      optionize(config.traefik["options"] || {})
-    end
-
-    def cmd_option_args
-      if args = config.traefik["args"]
-        optionize DEFAULT_ARGS.merge(args), with: "="
-      else
-        optionize DEFAULT_ARGS, with: "="
-      end
-    end
-
-    def host_port
-      config.traefik["host_port"] || CONTAINER_PORT
-    end
-end

lib/kamal/configuration.rb

@@ -6,7 +6,7 @@ require "erb"
 require "net/ssh/proxy/jump"
 
 class Kamal::Configuration
-  delegate :service, :image, :servers, :env, :labels, :registry, :stop_wait_time, :hooks_path, to: :raw_config, allow_nil: true
+  delegate :service, :image, :port, :servers, :labels, :registry, :stop_wait_time, :hooks_path, :logging, to: :raw_config, allow_nil: true
   delegate :argumentize, :optionize, to: Kamal::Utils
 
   attr_reader :destination, :raw_config
@@ -25,7 +25,9 @@ class Kamal::Configuration
 
       def load_config_file(file)
         if file.exist?
-          YAML.load(ERB.new(IO.read(file)).result).symbolize_keys
+          # Newer Psych doesn't load aliases by default
+          load_method = YAML.respond_to?(:unsafe_load) ? :unsafe_load : :load
+          YAML.send(load_method, ERB.new(IO.read(file)).result).symbolize_keys
         else
           raise "Configuration file not found in #{file}"
         end
@@ -89,14 +91,33 @@ class Kamal::Configuration
     roles.flat_map(&:hosts).uniq
   end
 
-  def primary_web_host
-    role(:web).primary_host
+  def primary_host
+    primary_role&.primary_host
   end
 
-  def traefik_hosts
-    roles.select(&:running_traefik?).flat_map(&:hosts).uniq
+  def primary_role_name
+    raw_config.primary_role || "web"
   end
 
+  def primary_role
+    role(primary_role_name)
+  end
+
+  def allow_empty_roles?
+    raw_config.allow_empty_roles
+  end
+
+  def proxy_roles
+    roles.select(&:running_proxy?)
+  end
+
+  def proxy_role_names
+    proxy_roles.flat_map(&:name)
+  end
+
+  def proxy_hosts
+    proxy_roles.flat_map(&:hosts).uniq
+  end
 
   def repository
     [ raw_config.registry["server"], image ].compact.join("/")
@@ -118,6 +139,10 @@ class Kamal::Configuration
     raw_config.require_destination
   end
 
+  def retain_containers
+    raw_config.retain_containers || 5
+  end
+
 
   def volume_args
     if raw_config.volumes.present?
@@ -128,9 +153,9 @@ class Kamal::Configuration
   end
 
   def logging_args
-    if raw_config.logging.present?
-      optionize({ "log-driver" => raw_config.logging["driver"] }.compact) +
-        argumentize("--log-opt", raw_config.logging["options"])
+    if logging.present?
+      optionize({ "log-driver" => logging["driver"] }.compact) +
+        argumentize("--log-opt", logging["options"])
     else
       argumentize("--log-opt", { "max-size" => "10m" })
     end
@@ -145,8 +170,8 @@ class Kamal::Configuration
     Kamal::Configuration::Builder.new(config: self)
   end
 
-  def traefik
-    raw_config.traefik || {}
+  def proxy
+    raw_config.proxy || {}
   end
 
   def ssh
@@ -159,7 +184,7 @@ class Kamal::Configuration
 
 
   def healthcheck
-    { "path" => "/up", "port" => 3000, "max_attempts" => 7, "exposed_port" => 3999, "cord" => "/tmp/kamal-cord", "log_lines" => 50 }.merge(raw_config.healthcheck || {})
+    { "path" => "/up", "port" => 3000, "max_attempts" => 7, "exposed_port" => 3999, "log_lines" => 50 }.merge(raw_config.healthcheck || {})
   end
 
   def healthcheck_service
@@ -191,24 +216,29 @@ class Kamal::Configuration
     raw_config.hooks_path || ".kamal/hooks"
   end
 
-  def host_env_directory
-    "#{run_directory}/env"
-  end
-
   def asset_path
     raw_config.asset_path
   end
 
 
+  def host_env_directory
+    "#{run_directory}/env"
+  end
+
+  def env
+    raw_config.env || {}
+  end
+
+
   def valid?
-    ensure_destination_if_required && ensure_required_keys_present && ensure_valid_kamal_version
+    ensure_destination_if_required && ensure_required_keys_present && ensure_valid_kamal_version && ensure_retain_containers_valid && ensure_valid_service_name
   end
 
   def to_h
     {
       roles: role_names,
       hosts: all_hosts,
-      primary_host: primary_web_host,
+      primary_host: primary_host,
       version: version,
       repository: repository,
       absolute_image: absolute_image,
@@ -247,15 +277,31 @@ class Kamal::Configuration
         raise ArgumentError, "You must specify a password for the registry in config/deploy.yml (or set the ENV variable if that's used)"
       end
 
-      roles.each do |role|
-        if role.hosts.empty?
-          raise ArgumentError, "No servers specified for the #{role.name} role"
+      unless role_names.include?(primary_role_name)
+        raise ArgumentError, "The primary_role #{primary_role_name} isn't defined"
+      end
+
+      if primary_role.hosts.empty?
+        raise ArgumentError, "No servers specified for the #{primary_role.name} primary_role"
+      end
+
+      unless allow_empty_roles?
+        roles.each do |role|
+          if role.hosts.empty?
+            raise ArgumentError, "No servers specified for the #{role.name} role. You can ignore this with allow_empty_roles: true"
+          end
         end
       end
 
       true
     end
 
+    def ensure_valid_service_name
+      raise ArgumentError, "Service name can only include alphanumeric characters, hyphens, and underscores" unless raw_config[:service] =~ /^[a-z0-9_-]+$/
+
+      true
+    end
+
     def ensure_valid_kamal_version
       if minimum_version && Gem::Version.new(minimum_version) > Gem::Version.new(Kamal::VERSION)
         raise ArgumentError, "Current version is #{Kamal::VERSION}, minimum required is #{minimum_version}"
@@ -264,6 +310,12 @@ class Kamal::Configuration
       true
     end
 
+    def ensure_retain_containers_valid
+      raise ArgumentError, "Must retain at least 1 container" if retain_containers < 1
+
+      true
+    end
+
 
     def role_names
       raw_config.servers.is_a?(Array) ? [ "web" ] : raw_config.servers.keys.sort
@@ -272,7 +324,10 @@ class Kamal::Configuration
     def git_version
       @git_version ||=
         if Kamal::Git.used?
-          [ Kamal::Git.revision, Kamal::Git.uncommitted_changes.present? ? "_uncommitted_#{SecureRandom.hex(8)}" : "" ].join
+          if Kamal::Git.uncommitted_changes.present? && !builder.git_archive?
+            uncommitted_suffix = "_uncommitted_#{SecureRandom.hex(8)}"
+          end
+          [ Kamal::Git.revision, uncommitted_suffix ].compact.join
         else
           raise "Can't use commit hash as version, no git repository found in #{Dir.pwd}"
         end

lib/kamal/configuration/accessory.rb

@@ -8,7 +8,7 @@ class Kamal::Configuration::Accessory
   end
 
   def service_name
-    "#{config.service}-#{name}"
+    specifics["service"] || "#{config.service}-#{name}"
   end
 
   def image
@@ -16,7 +16,7 @@ class Kamal::Configuration::Accessory
   end
 
   def hosts
-    if (specifics.keys & ["host", "hosts", "roles"]).size != 1
+    if (specifics.keys & [ "host", "hosts", "roles" ]).size != 1
       raise ArgumentError, "Specify one of `host`, `hosts` or `roles` for accessory `#{name}`"
     end
 
@@ -42,23 +42,13 @@ class Kamal::Configuration::Accessory
   end
 
   def env
-    specifics["env"] || {}
-  end
-
-  def env_file
-    Kamal::EnvFile.new(env)
-  end
-
-  def host_env_directory
-    File.join config.host_env_directory, "accessories"
-  end
-
-  def host_env_file_path
-    File.join host_env_directory, "#{service_name}.env"
+    Kamal::Configuration::Env.from_config \
+      config: specifics.fetch("env", {}),
+      secrets_file: File.join(config.host_env_directory, "accessories", "#{service_name}.env")
   end
 
   def env_args
-    argumentize "--env-file", host_env_file_path
+    env.args
   end
 
   def files
@@ -70,8 +60,8 @@ class Kamal::Configuration::Accessory
 
   def directories
     specifics["directories"]&.to_h do |host_to_container_mapping|
-      host_relative_path, container_path = host_to_container_mapping.split(":")
-      [ expand_host_path(host_relative_path), container_path ]
+      host_path, container_path = host_to_container_mapping.split(":")
+      [ expand_host_path(host_path), container_path ]
     end || {}
   end
 
@@ -111,10 +101,10 @@ class Kamal::Configuration::Accessory
     end
 
     def with_clear_env_loaded
-      (env["clear"] || env).each { |k, v| ENV[k] = v }
+      env.clear.each { |k, v| ENV[k] = v }
       yield
     ensure
-      (env["clear"] || env).each { |k, v| ENV.delete(k) }
+      env.clear.each { |k, v| ENV.delete(k) }
     end
 
     def read_dynamic_file(local_file)
@@ -138,13 +128,17 @@ class Kamal::Configuration::Accessory
 
     def remote_directories_as_volumes
       specifics["directories"]&.collect do |host_to_container_mapping|
-        host_relative_path, container_path = host_to_container_mapping.split(":")
-        [ expand_host_path(host_relative_path), container_path ].join(":")
+        host_path, container_path = host_to_container_mapping.split(":")
+        [ expand_host_path(host_path), container_path ].join(":")
       end || []
     end
 
-    def expand_host_path(host_relative_path)
-      "#{service_data_directory}/#{host_relative_path}"
+    def expand_host_path(host_path)
+      absolute_path?(host_path) ? host_path : "#{service_data_directory}/#{host_path}"
+    end
+
+    def absolute_path?(path)
+      Pathname.new(path).absolute?
     end
 
     def service_data_directory
@@ -155,7 +149,7 @@ class Kamal::Configuration::Accessory
       if specifics.key?("host")
         host = specifics["host"]
         if host
-          [host]
+          [ host ]
         else
           raise ArgumentError, "Missing host for accessory `#{name}`"
         end

lib/kamal/configuration/boot.rb

@@ -8,7 +8,7 @@ class Kamal::Configuration::Boot
     limit = @options["limit"]
 
     if limit.to_s.end_with?("%")
-      @host_count * limit.to_i / 100
+      [ @host_count * limit.to_i / 100, 1 ].max
     else
       limit
     end

lib/kamal/configuration/builder.rb

@@ -40,7 +40,7 @@ class Kamal::Configuration::Builder
   end
 
   def context
-    @options["context"] || "."
+    @options["context"] || (git_archive? ? "-" : ".")
   end
 
   def local_arch
@@ -81,10 +81,18 @@ class Kamal::Configuration::Builder
     end
   end
 
+  def ssh
+    @options["ssh"]
+  end
+
+  def git_archive?
+    Kamal::Git.used? && @options["context"].nil?
+  end
+
   private
     def valid?
       if @options["cache"] && @options["cache"]["type"]
-        raise ArgumentError, "Invalid cache type: #{@options["cache"]["type"]}" unless ["gha", "registry"].include?(@options["cache"]["type"])
+        raise ArgumentError, "Invalid cache type: #{@options["cache"]["type"]}" unless [ "gha", "registry" ].include?(@options["cache"]["type"])
       end
     end
 
@@ -105,7 +113,7 @@ class Kamal::Configuration::Builder
     end
 
     def cache_to_config_for_gha
-      [ "type=gha", @options["cache"]&.fetch("options", nil)].compact.join(",")
+      [ "type=gha", @options["cache"]&.fetch("options", nil) ].compact.join(",")
     end
 
     def cache_to_config_for_registry

lib/kamal/configuration/env.rb

@@ -0,0 +1,40 @@
+class Kamal::Configuration::Env
+  attr_reader :secrets_keys, :clear, :secrets_file
+  delegate :argumentize, to: Kamal::Utils
+
+  def self.from_config(config:, secrets_file: nil)
+    secrets_keys = config.fetch("secret", [])
+    clear = config.fetch("clear", config.key?("secret") ? {} : config)
+
+    new clear: clear, secrets_keys: secrets_keys, secrets_file: secrets_file
+  end
+
+  def initialize(clear:, secrets_keys:, secrets_file:)
+    @clear = clear
+    @secrets_keys = secrets_keys
+    @secrets_file = secrets_file
+  end
+
+  def args
+    [ "--env-file", secrets_file, *argumentize("--env", clear) ]
+  end
+
+  def secrets_io
+    StringIO.new(Kamal::EnvFile.new(secrets).to_s)
+  end
+
+  def secrets
+    @secrets ||= secrets_keys.to_h { |key| [ key, ENV.fetch(key) ] }
+  end
+
+  def secrets_directory
+    File.dirname(secrets_file)
+  end
+
+  def merge(other)
+    self.class.new \
+      clear: @clear.merge(other.clear),
+      secrets_keys: @secrets_keys | other.secrets_keys,
+      secrets_file: secrets_file
+  end
+end

lib/kamal/configuration/role.rb

@@ -1,11 +1,11 @@
 class Kamal::Configuration::Role
-  CORD_FILE = "cord"
   delegate :argumentize, :optionize, to: Kamal::Utils
 
   attr_accessor :name
+  alias to_s name
 
   def initialize(name, config:)
-   @name, @config = name.inquiry, config
+    @name, @config = name.inquiry, config
   end
 
   def primary_host
@@ -16,6 +16,10 @@ class Kamal::Configuration::Role
     @hosts ||= extract_hosts_from_config
   end
 
+  def port
+    specializations["port"] || config.port || "3000"
+  end
+
   def cmd
     specializations["cmd"]
   end
@@ -29,36 +33,32 @@ class Kamal::Configuration::Role
   end
 
   def labels
-    default_labels.merge(traefik_labels).merge(custom_labels)
+    default_labels.merge(custom_labels)
   end
 
   def label_args
     argumentize "--label", labels
   end
 
+  def logging_args
+    args = config.logging || {}
+    args.deep_merge!(specializations["logging"]) if specializations["logging"].present?
 
-  def env
-    if config.env && config.env["secret"]
-      merged_env_with_secrets
+    if args.any?
+      optionize({ "log-driver" => args["driver"] }.compact) +
+        argumentize("--log-opt", args["options"])
     else
-      merged_env
+      config.logging_args
     end
   end
 
-  def env_file
-    Kamal::EnvFile.new(env)
-  end
 
-  def host_env_directory
-    File.join config.host_env_directory, "roles"
-  end
-
-  def host_env_file_path
-    File.join host_env_directory, "#{[config.service, name, config.destination].compact.join("-")}.env"
+  def env
+    @env ||= base_env.merge(specialized_env)
   end
 
   def env_args
-    argumentize "--env-file", host_env_file_path
+    env.args
   end
 
   def asset_volume_args
@@ -66,14 +66,9 @@ class Kamal::Configuration::Role
   end
 
 
-  def health_check_args(cord: true)
+  def health_check_args
     if health_check_cmd.present?
-      if cord && uses_cord?
-        optionize({ "health-cmd" => health_check_cmd_with_cord, "health-interval" => health_check_interval })
-          .concat(cord_volume.docker_args)
-      else
-        optionize({ "health-cmd" => health_check_cmd, "health-interval" => health_check_interval })
-      end
+      optionize({ "health-cmd" => health_check_cmd, "health-interval" => health_check_interval })
     else
       []
     end
@@ -83,46 +78,21 @@ class Kamal::Configuration::Role
     health_check_options["cmd"] || http_health_check(port: health_check_options["port"], path: health_check_options["path"])
   end
 
-  def health_check_cmd_with_cord
-    "(#{health_check_cmd}) && (stat #{cord_container_file} > /dev/null || exit 1)"
-  end
-
   def health_check_interval
     health_check_options["interval"] || "1s"
   end
 
 
-  def running_traefik?
-    name.web? || specializations["traefik"]
-  end
-
-
-  def uses_cord?
-    running_traefik? && cord_volume && health_check_cmd.present?
-  end
-
-  def cord_host_directory
-    File.join config.run_directory_as_docker_volume, "cords", [container_prefix, config.run_id].join("-")
-  end
-
-  def cord_volume
-    if (cord = health_check_options["cord"])
-      @cord_volume ||= Kamal::Configuration::Volume.new \
-        host_path: File.join(config.run_directory, "cords", [container_prefix, config.run_id].join("-")),
-        container_path: cord
+  def running_proxy?
+    if specializations["proxy"].nil?
+      primary?
+    else
+      specializations["proxy"]
     end
   end
 
-  def cord_host_file
-    File.join cord_volume.host_path, CORD_FILE
-  end
-
-  def cord_container_directory
-    health_check_options.fetch("cord", nil)
-  end
-
-  def cord_container_file
-    File.join cord_volume.container_path, CORD_FILE
+  def primary?
+    self == @config.primary_role
   end
 
 
@@ -140,7 +110,7 @@ class Kamal::Configuration::Role
   end
 
   def assets?
-    asset_path.present? && running_traefik?
+    asset_path.present? && running_proxy?
   end
 
   def asset_volume(version = nil)
@@ -171,32 +141,7 @@ class Kamal::Configuration::Role
     end
 
     def default_labels
-      if config.destination
-        { "service" => config.service, "role" => name, "destination" => config.destination }
-      else
-        { "service" => config.service, "role" => name }
-      end
-    end
-
-    def traefik_labels
-      if running_traefik?
-        {
-          # Setting a service property ensures that the generated service name will be consistent between versions
-          "traefik.http.services.#{traefik_service}.loadbalancer.server.scheme" => "http",
-
-          "traefik.http.routers.#{traefik_service}.rule" => "PathPrefix(`/`)",
-          "traefik.http.routers.#{traefik_service}.priority" => "2",
-          "traefik.http.middlewares.#{traefik_service}-retry.retry.attempts" => "5",
-          "traefik.http.middlewares.#{traefik_service}-retry.retry.initialinterval" => "500ms",
-          "traefik.http.routers.#{traefik_service}.middlewares" => "#{traefik_service}-retry@docker"
-        }
-      else
-        {}
-      end
-    end
-
-    def traefik_service
-      [ config.service, name, config.destination ].compact.join("-")
+      { "service" => config.service, "role" => name, "destination" => config.destination }
     end
 
     def custom_labels
@@ -208,31 +153,21 @@ class Kamal::Configuration::Role
 
     def specializations
       if config.servers.is_a?(Array) || config.servers[name].is_a?(Array)
-        { }
+        {}
       else
         config.servers[name].except("hosts")
       end
     end
 
     def specialized_env
-      specializations["env"] || {}
-    end
-
-    def merged_env
-      config.env&.merge(specialized_env) || {}
+      Kamal::Configuration::Env.from_config config: specializations.fetch("env", {})
     end
 
     # Secrets are stored in an array, which won't merge by default, so have to do it by hand.
-    def merged_env_with_secrets
-      merged_env.tap do |new_env|
-        new_env["secret"] = Array(config.env["secret"]) + Array(specialized_env["secret"])
-
-        # If there's no secret/clear split, everything is clear
-        clear_app_env  = config.env["secret"] ? Array(config.env["clear"]) : Array(config.env["clear"] || config.env)
-        clear_role_env = specialized_env["secret"] ? Array(specialized_env["clear"]) : Array(specialized_env["clear"] || specialized_env)
-
-        new_env["clear"] = (clear_app_env + clear_role_env).uniq
-      end
+    def base_env
+      Kamal::Configuration::Env.from_config \
+        config: config.env,
+        secrets_file: File.join(config.host_env_directory, "roles", "#{container_prefix}.env")
     end
 
     def http_health_check(port:, path:)
@@ -242,7 +177,7 @@ class Kamal::Configuration::Role
     def health_check_options
       @health_check_options ||= begin
         options = specializations["healthcheck"] || {}
-        options = config.healthcheck.merge(options) if running_traefik?
+        options = config.healthcheck.merge(options) if running_proxy?
         options
       end
     end

lib/kamal/configuration/ssh.rb

@@ -9,6 +9,10 @@ class Kamal::Configuration::Ssh
     config.fetch("user", "root")
   end
 
+  def port
+    config.fetch("port", 22)
+  end
+
   def proxy
     if (proxy = config["proxy"])
       Net::SSH::Proxy::Jump.new(proxy.include?("@") ? proxy : "root@#{proxy}")
@@ -18,7 +22,7 @@ class Kamal::Configuration::Ssh
   end
 
   def options
-    { user: user, proxy: proxy, logger: logger, keepalive: true, keepalive_interval: 30 }.compact
+    { user: user, port: port, proxy: proxy, logger: logger, keepalive: true, keepalive_interval: 30 }.compact
   end
 
   def to_h

lib/kamal/env_file.rb

@@ -3,21 +3,11 @@ class Kamal::EnvFile
   def initialize(env)
     @env = env
   end
-  
+
   def to_s
     env_file = StringIO.new.tap do |contents|
-      if (secrets = @env["secret"]).present?
-        @env.fetch("secret", @env)&.each do |key|
-          contents << docker_env_file_line(key, ENV.fetch(key))
-        end
-
-        @env["clear"]&.each do |key, value|
-          contents << docker_env_file_line(key, value)
-        end
-      else
-        @env.fetch("clear", @env)&.each do |key, value|
-          contents << docker_env_file_line(key, value)
-        end
+      @env.each do |key, value|
+        contents << docker_env_file_line(key, value)
       end
     end.string
 
@@ -26,10 +16,10 @@ class Kamal::EnvFile
   end
 
   alias to_str to_s
-  
+
   private
     def docker_env_file_line(key, value)
-      "#{key.to_s}=#{escape_docker_env_file_value(value)}\n"
+      "#{key}=#{escape_docker_env_file_value(value)}\n"
     end
 
     # Escape a value to make it safe to dump in a docker file.

lib/kamal/sshkit_with_ext.rb

@@ -1,5 +1,6 @@
 require "sshkit"
 require "sshkit/dsl"
+require "net/scp"
 require "active_support/core_ext/hash/deep_merge"
 require "json"
 

lib/kamal/utils.rb

@@ -9,7 +9,7 @@ module Kamal::Utils
       if value.present?
         attr = "#{key}=#{escape_shell_value(value)}"
         attr = self.sensitive(attr, redaction: "#{key}=[REDACTED]") if sensitive
-        [ argument, attr]
+        [ argument, attr ]
       else
         [ argument, key ]
       end
@@ -29,7 +29,7 @@ module Kamal::Utils
 
   # Flattens a one-to-many structure into an array of two-element arrays each containing a key-value pair
   def flatten_args(args)
-    args.flat_map { |key, value| value.try(:map) { |entry| [key, entry] } || [ [ key, value ] ] }
+    args.flat_map { |key, value| value.try(:map) { |entry| [ key, entry ] } || [ [ key, value ] ] }
   end
 
   # Marks sensitive values for redaction in logs and human-visible output.
@@ -58,4 +58,20 @@ module Kamal::Utils
       .gsub(/`/, '\\\\`')
       .gsub(DOLLAR_SIGN_WITHOUT_SHELL_EXPANSION_REGEX, '\$')
   end
+
+  # Apply a list of host or role filters, including wildcard matches
+  def filter_specific_items(filters, items)
+    matches = []
+
+    Array(filters).select do |filter|
+      matches += Array(items).select do |item|
+        # Only allow * for a wildcard
+        pattern = Regexp.escape(filter).gsub('\*', ".*")
+        # items are roles or hosts
+        (item.respond_to?(:name) ? item.name : item).match(/^#{pattern}$/)
+      end
+    end
+
+    matches
+  end
 end

lib/kamal/version.rb

@@ -1,3 +1,3 @@
 module Kamal
-  VERSION = "1.1.0"
+  VERSION = "1.4.0"
 end

test/cli/accessory_test.rb

@@ -7,7 +7,7 @@ class CliAccessoryTest < CliTestCase
 
     run_command("boot", "mysql").tap do |output|
       assert_match /docker login.*on 1.1.1.3/, output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-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 --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-mysql.env --env MYSQL_ROOT_HOST=\"%\" --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
     end
   end
 
@@ -21,7 +21,7 @@ class CliAccessoryTest < CliTestCase
       assert_match /docker login.*on 1.1.1.3/, output
       assert_match /docker login.*on 1.1.1.1/, output
       assert_match /docker login.*on 1.1.1.2/, output
-      assert_match "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-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 --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-mysql.env --env MYSQL_ROOT_HOST=\"%\" --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-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-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 --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
     end
@@ -48,6 +48,18 @@ class CliAccessoryTest < CliTestCase
     run_command("reboot", "mysql")
   end
 
+  test "reboot all" do
+    Kamal::Commands::Registry.any_instance.expects(:login).times(3)
+    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", login: 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", login: false)
+
+    run_command("reboot", "all")
+  end
+
   test "start" do
     assert_match "docker container start app-mysql", run_command("start", "mysql")
   end
@@ -67,6 +79,10 @@ class CliAccessoryTest < CliTestCase
     assert_match "docker ps --filter label=service=app-mysql", run_command("details", "mysql")
   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") }
+  end
+
   test "details with all" do
     run_command("details", "all").tap do |output|
       assert_match "docker ps --filter label=service=app-mysql", output
@@ -97,7 +113,7 @@ class CliAccessoryTest < CliTestCase
 
   test "logs with follow" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.3 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'")
+      .with("ssh -t root@1.1.1.3 -p 22 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'")
 
     assert_match "docker logs app-mysql --timestamps --tail 10 --follow 2>&1", run_command("logs", "mysql", "--follow")
   end
@@ -136,8 +152,32 @@ class CliAccessoryTest < CliTestCase
     assert_match "rm -rf app-mysql", run_command("remove_service_directory", "mysql")
   end
 
+  test "hosts param respected" do
+    Kamal::Cli::Accessory.any_instance.expects(:directories).with("redis")
+    Kamal::Cli::Accessory.any_instance.expects(:upload).with("redis")
+
+    run_command("boot", "redis", "--hosts", "1.1.1.1").tap do |output|
+      assert_match /docker login.*on 1.1.1.1/, output
+      assert_no_match /docker login.*on 1.1.1.2/, output
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-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 --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.2", output
+    end
+  end
+
+  test "hosts param intersected with configuration" do
+    Kamal::Cli::Accessory.any_instance.expects(:directories).with("redis")
+    Kamal::Cli::Accessory.any_instance.expects(:upload).with("redis")
+
+    run_command("boot", "redis", "--hosts", "1.1.1.1,1.1.1.3").tap do |output|
+      assert_match /docker login.*on 1.1.1.1/, output
+      assert_no_match /docker login.*on 1.1.1.3/, output
+      assert_match "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-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 --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-redis.env --volume $PWD/app-redis/data:/data --label service=\"app-redis\" redis:latest on 1.1.1.3", 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.yml" ]) }
     end
 end

test/cli/app_test.rb

@@ -5,39 +5,26 @@ class CliAppTest < CliTestCase
     stub_running
     run_command("boot").tap do |output|
       assert_match "docker tag dhh/app:latest dhh/app:latest", output
-      assert_match /docker run --detach --restart unless-stopped --name app-web-latest --hostname 1.1.1.1-[0-9a-f]{12} /, 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
     end
   end
 
   test "boot will rename if same version is already running" do
-    Object.any_instance.stubs(:sleep)
     run_command("details") # Preheat Kamal const
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet", raise_on_non_zero_exit: false)
       .returns("12345678") # running version
 
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-      .returns("running") # health check
-
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--filter", "status=running", "--filter", "status=restarting", "--latest", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("123") # old version
 
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "-f '{{ range .Mounts }}{{printf \"%s %s\\n\" .Source .Destination}}{{ end }}'", "app-web-123", "|", :awk, "'$2 == \"/tmp/kamal-cord\" {print $1}'", :raise_on_non_zero_exit => false)
-      .returns("cordfile") # old version
-
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-123$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-      .returns("unhealthy") # old version unhealthy
-
     run_command("boot").tap do |output|
       assert_match /Renaming container .* to .* as already deployed on 1.1.1.1/, output # Rename
       assert_match /docker rename app-web-latest app-web-latest_replaced_[0-9a-f]{16}/, output
-      assert_match /docker run --detach --restart unless-stopped --name app-web-latest --hostname 1.1.1.1-[0-9a-f]{12} /, 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
     end
   ensure
@@ -45,7 +32,7 @@ class CliAppTest < CliTestCase
   end
 
   test "boot uses group strategy when specified" do
-    Kamal::Cli::App.any_instance.stubs(:on).with("1.1.1.1").twice # acquire & release lock
+    Kamal::Cli::App.any_instance.stubs(:on).with("1.1.1.1").times(3) # ensure locks dir, acquire & release lock
     Kamal::Cli::App.any_instance.stubs(:on).with([ "1.1.1.1" ]) # tag container
 
     # Strategy is used when booting the containers
@@ -57,7 +44,7 @@ class CliAppTest < CliTestCase
   test "boot errors leave lock in place" do
     Kamal::Cli::App.any_instance.expects(:using_version).raises(RuntimeError)
 
-    assert !KAMAL.holding_lock?
+    assert_not KAMAL.holding_lock?
     assert_raises(RuntimeError) do
       stderred { run_command("boot") }
     end
@@ -70,23 +57,15 @@ class CliAppTest < CliTestCase
       .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet", raise_on_non_zero_exit: false)
       .returns("12345678") # running version
 
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-      .returns("running") # health check
-
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--filter", "status=running", "--filter", "status=restarting", "--latest", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("123").twice # old version
 
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "-f '{{ range .Mounts }}{{printf \"%s %s\\n\" .Source .Destination}}{{ end }}'", "app-web-123", "|", :awk, "'$2 == \"/tmp/kamal-cord\" {print $1}'", :raise_on_non_zero_exit => false)
-      .returns("") # old version
-
     run_command("boot", config: :with_assets).tap do |output|
       assert_match "docker tag dhh/app:latest dhh/app:latest", output
       assert_match "/usr/bin/env mkdir -p .kamal/assets/volumes/app-web-latest ; cp -rnT .kamal/assets/extracted/app-web-latest .kamal/assets/volumes/app-web-latest ; cp -rnT .kamal/assets/extracted/app-web-latest .kamal/assets/volumes/app-web-123 || true ; cp -rnT .kamal/assets/extracted/app-web-123 .kamal/assets/volumes/app-web-latest || true", output
       assert_match "/usr/bin/env mkdir -p .kamal/assets/extracted/app-web-latest && docker stop -t 1 app-web-assets 2> /dev/null || true && docker run --name app-web-assets --detach --rm dhh/app:latest sleep 1000000 && docker cp -L app-web-assets:/public/assets/. .kamal/assets/extracted/app-web-latest && docker stop -t 1 app-web-assets", output
-      assert_match /docker run --detach --restart unless-stopped --name app-web-latest --hostname 1.1.1.1-[0-9a-f]{12} /, output
+      assert_match /docker run --detach --restart unless-stopped --name app-web-latest --network kamal --hostname 1.1.1.1-[0-9a-f]{12} /, output
       assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
       assert_match "/usr/bin/env find .kamal/assets/extracted -maxdepth 1 -name 'app-web-*' ! -name app-web-latest -exec rm -rf \"{}\" + ; find .kamal/assets/volumes -maxdepth 1 -name 'app-web-*' ! -name app-web-latest -exec rm -rf \"{}\" +", output
     end
@@ -172,7 +151,7 @@ class CliAppTest < CliTestCase
 
   test "exec interactive" do
     SSHKit::Backend::Abstract.any_instance.expects(:exec)
-      .with("ssh -t root@1.1.1.1 'docker run -it --rm --env-file .kamal/env/roles/app-web.env dhh/app:latest ruby -v'")
+      .with("ssh -t root@1.1.1.1 -p 22 'docker run -it --rm --env-file .kamal/env/roles/app-web.env dhh/app:latest ruby -v'")
     run_command("exec", "-i", "ruby -v").tap do |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
@@ -181,7 +160,7 @@ class CliAppTest < CliTestCase
 
   test "exec interactive with reuse" do
     SSHKit::Backend::Abstract.any_instance.expects(:exec)
-      .with("ssh -t root@1.1.1.1 'docker exec -it app-web-999 ruby -v'")
+      .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_match "Get current version of running container...", output
       assert_match "Running docker ps --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest --format \"{{.Names}}\" | while read line; do echo ${line#app-web-}; done on 1.1.1.1", output
@@ -210,7 +189,7 @@ class CliAppTest < CliTestCase
 
   test "logs with follow" do
     SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 'docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
+      .with("ssh -t root@1.1.1.1 -p 22 'docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1'")
 
     assert_match "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1", run_command("logs", "--follow")
   end
@@ -223,27 +202,19 @@ 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|
+    stdouted { Kamal::Cli::Main.start([ "app", "version", "-c", "test/fixtures/deploy_with_accessories.yml", "--hosts", "1.1.1.1" ]) }.tap do |output|
       assert_match "docker ps --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest --format \"{{.Names}}\" | while read line; do echo ${line#app-web-}; done", output
     end
   end
 
   private
     def run_command(*command, config: :with_accessories)
-      stdouted { Kamal::Cli::App.start([*command, "-c", "test/fixtures/deploy_#{config}.yml", "--hosts", "1.1.1.1"]) }
+      stdouted { Kamal::Cli::App.start([ *command, "-c", "test/fixtures/deploy_#{config}.yml", "--hosts", "1.1.1.1" ]) }
     end
 
     def stub_running
       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-web-latest$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-        .returns("running") # health check
-
-      SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-        .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-123$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-        .returns("unhealthy") # health check
     end
 end

test/cli/build_test.rb

@@ -15,7 +15,7 @@ class CliBuildTest < CliTestCase
     run_command("push").tap do |output|
       assert_hook_ran "pre-build", output, **hook_variables
       assert_match /docker --version && docker buildx version/, output
-      assert_match /docker buildx build --push --platform linux\/amd64,linux\/arm64 --builder kamal-app-multiarch -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile \. as .*@localhost/, output
+      assert_match /git archive -tar HEAD | docker buildx build --push --platform linux\/amd64,linux\/arm64 --builder kamal-app-multiarch -t dhh\/app:999 -t dhh\/app:latest --label service="app" --file Dockerfile - as .*@localhost/, output
     end
   end
 
@@ -25,7 +25,10 @@ class CliBuildTest < CliTestCase
       .with(:docker, "--version", "&&", :docker, :buildx, "version")
 
     SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-      .with { |*args| args[0..1] == [:docker, :buildx] }
+      .with(:docker, :buildx, :create, "--use", "--name", "kamal-app-multiarch")
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |*args| p args[0..6]; args[0..6] == [ :git, :archive, "--format=tar", :HEAD, "|", :docker, :buildx ] }
       .raises(SSHKit::Command::Failed.new("no builder"))
       .then
       .returns(true)
@@ -50,14 +53,14 @@ class CliBuildTest < CliTestCase
 
     assert_raises(Kamal::Cli::HookError) { run_command("push") }
 
-    assert @executions.none? { |args| args[0..2] == [:docker, :buildx, :build] }
+    assert @executions.none? { |args| args[0..2] == [ :docker, :buildx, :build ] }
   end
 
   test "pull" do
     run_command("pull").tap do |output|
       assert_match /docker image rm --force dhh\/app:999/, output
       assert_match /docker pull dhh\/app:999/, output
-      assert_match "docker inspect -f '{{ .Config.Labels.service }}' dhh/app:999 | grep -x app || (echo \"Image dhh/app:999 is missing the `service` label\" && exit 1)", output
+      assert_match "docker inspect -f '{{ .Config.Labels.service }}' dhh/app:999 | grep -x app || (echo \"Image dhh/app:999 is missing the 'service' label\" && exit 1)", output
     end
   end
 
@@ -105,13 +108,13 @@ class CliBuildTest < CliTestCase
 
   private
     def run_command(*command, fixture: :with_accessories)
-      stdouted { Kamal::Cli::Build.start([*command, "-c", "test/fixtures/deploy_#{fixture}.yml"]) }
+      stdouted { Kamal::Cli::Build.start([ *command, "-c", "test/fixtures/deploy_#{fixture}.yml" ]) }
     end
 
     def stub_dependency_checks
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
         .with(:docker, "--version", "&&", :docker, :buildx, "version")
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-        .with { |*args| args[0..1] == [:docker, :buildx] }
+        .with { |*args| args[0..1] == [ :docker, :buildx ] }
     end
 end

test/cli/cli_test_case.rb

@@ -21,7 +21,7 @@ class CliTestCase < ActiveSupport::TestCase
       Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
 
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-        .with { |*args| @executions << args; args != [".kamal/hooks/#{hook}"] }
+        .with { |*args| @executions << args; args != [ ".kamal/hooks/#{hook}" ] }
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
         .with { |*args| args.first == ".kamal/hooks/#{hook}" }
         .raises(SSHKit::Command::Failed.new("failed"))
@@ -31,9 +31,11 @@ class CliTestCase < ActiveSupport::TestCase
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
         .with { |*args| args == [ :mkdir, "-p", ".kamal" ] }
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-        .with { |arg1, arg2| arg1 == :mkdir && arg2 == ".kamal/lock-app" }
+        .with { |arg1, arg2, arg3| arg1 == :mkdir && arg2 == "-p" && arg3 == ".kamal/locks" }
       SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-        .with { |arg1, arg2| arg1 == :rm && arg2 == ".kamal/lock-app/details" }
+        .with { |arg1, arg2| arg1 == :mkdir && arg2 == ".kamal/locks/app" }
+      SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+        .with { |arg1, arg2| arg1 == :rm && arg2 == ".kamal/locks/app/details" }
     end
 
     def assert_hook_ran(hook, output, version:, service_version:, hosts:, command:, subcommand: nil, runtime: nil)

test/cli/env_test.rb

@@ -4,16 +4,12 @@ class CliEnvTest < CliTestCase
   test "push" do
     run_command("push").tap do |output|
       assert_match "Running /usr/bin/env mkdir -p .kamal/env/roles on 1.1.1.1", output
-      assert_match "Running /usr/bin/env mkdir -p .kamal/env/traefik on 1.1.1.1", output
       assert_match "Running /usr/bin/env mkdir -p .kamal/env/accessories on 1.1.1.1", output
       assert_match "Running /usr/bin/env mkdir -p .kamal/env/roles on 1.1.1.1", output
-      assert_match "Running /usr/bin/env mkdir -p .kamal/env/traefik on 1.1.1.2", output
       assert_match "Running /usr/bin/env mkdir -p .kamal/env/accessories on 1.1.1.1", output
       assert_match ".kamal/env/roles/app-web.env", output
       assert_match ".kamal/env/roles/app-workers.env", output
-      assert_match ".kamal/env/traefik/traefik.env", output
       assert_match ".kamal/env/accessories/app-redis.env", output
-
     end
   end
 
@@ -23,8 +19,6 @@ class CliEnvTest < CliTestCase
       assert_match "Running /usr/bin/env rm -f .kamal/env/roles/app-web.env on 1.1.1.2", output
       assert_match "Running /usr/bin/env rm -f .kamal/env/roles/app-workers.env on 1.1.1.3", output
       assert_match "Running /usr/bin/env rm -f .kamal/env/roles/app-workers.env on 1.1.1.4", output
-      assert_match "Running /usr/bin/env rm -f .kamal/env/traefik/traefik.env on 1.1.1.1", output
-      assert_match "Running /usr/bin/env rm -f .kamal/env/traefik/traefik.env on 1.1.1.2", output
       assert_match "Running /usr/bin/env rm -f .kamal/env/accessories/app-redis.env on 1.1.1.1", output
       assert_match "Running /usr/bin/env rm -f .kamal/env/accessories/app-redis.env on 1.1.1.2", output
       assert_match "Running /usr/bin/env rm -f .kamal/env/accessories/app-mysql.env on 1.1.1.3", output
@@ -33,6 +27,6 @@ class CliEnvTest < CliTestCase
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Env.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Kamal::Cli::Env.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
     end
 end

test/cli/healthcheck_test.rb

@@ -65,8 +65,18 @@ class CliHealthcheckTest < CliTestCase
     assert_match "container not ready (unhealthy)", exception.message
   end
 
+  test "raises an exception if primary does not have a proxy" do
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).never
+
+    exception = assert_raises do
+      run_command("perform", config_file: "test/fixtures/deploy_workers_only.yml")
+    end
+
+    assert_equal "The primary host is not configured to run a proxy", exception.message
+  end
+
   private
-    def run_command(*command)
-      stdouted { Kamal::Cli::Healthcheck.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    def run_command(*command, config_file: "test/fixtures/deploy_with_accessories.yml")
+      stdouted { Kamal::Cli::Healthcheck.start([ *command, "-c", config_file ]) }
     end
 end

test/cli/lock_test.rb

@@ -3,7 +3,7 @@ require_relative "cli_test_case"
 class CliLockTest < CliTestCase
   test "status" do
     run_command("status").tap do |output|
-      assert_match "Running /usr/bin/env stat .kamal/lock-app > /dev/null && cat .kamal/lock-app/details | base64 -d on 1.1.1.1", output
+      assert_match "Running /usr/bin/env stat .kamal/locks/app > /dev/null && cat .kamal/locks/app/details | base64 -d on 1.1.1.1", output
     end
   end
 
@@ -15,6 +15,6 @@ class CliLockTest < CliTestCase
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Lock.start([*command, "-v", "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Kamal::Cli::Lock.start([ *command, "-v", "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
     end
 end

test/cli/main_test.rb

@@ -2,12 +2,47 @@ require_relative "cli_test_case"
 
 class CliMainTest < CliTestCase
   test "setup" do
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:server:bootstrap")
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:env:push")
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:accessory:boot", [ "all" ])
+    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:env:push", [], invoke_options)
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:accessory:boot", [ "all" ], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:deploy)
 
-    run_command("setup")
+    run_command("setup").tap do |output|
+      assert_match /Ensure Docker is installed.../, output
+      assert_match /Push env files.../, output
+    end
+  end
+
+  test "setup 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:server:bootstrap", [], invoke_options)
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:env:push", [], 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)
+    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:healthcheck:perform", [], 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)
+
+    run_command("setup", "--skip_push").tap do |output|
+      assert_match /Ensure Docker is installed.../, output
+      assert_match /Push env files.../, 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 proxy is running/, output
+      assert_match /Ensure app can pass healthcheck/, output
+      assert_match /Detect stale containers/, output
+      assert_match /Prune old containers and images/, output
+      assert_match /Releasing the deploy lock/, output
+    end
   end
 
   test "deploy" do
@@ -15,7 +50,7 @@ class CliMainTest < CliTestCase
 
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:traefik:boot", [], 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:healthcheck:perform", [], 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)
@@ -29,7 +64,7 @@ class CliMainTest < CliTestCase
       assert_match /Log into image registry/, output
       assert_match /Build and push app image/, output
       assert_hook_ran "pre-deploy", output, **hook_variables
-      assert_match /Ensure Traefik is running/, output
+      assert_match /Ensure proxy is running/, output
       assert_match /Ensure app can pass healthcheck/, output
       assert_match /Detect stale containers/, output
       assert_match /Prune old containers and images/, output
@@ -42,7 +77,7 @@ class CliMainTest < CliTestCase
 
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:pull", [], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:traefik:boot", [], 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:healthcheck:perform", [], 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)
@@ -52,7 +87,7 @@ class CliMainTest < CliTestCase
       assert_match /Acquiring the deploy lock/, output
       assert_match /Log into image registry/, output
       assert_match /Pull app image/, output
-      assert_match /Ensure Traefik is running/, output
+      assert_match /Ensure proxy is running/, output
       assert_match /Ensure app can pass healthcheck/, output
       assert_match /Detect stale containers/, output
       assert_match /Prune old containers and images/, output
@@ -67,11 +102,14 @@ class CliMainTest < CliTestCase
       .with { |*args| args == [ :mkdir, "-p", ".kamal" ] }
 
     SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-      .with { |*arg| arg[0..1] == [:mkdir, ".kamal/lock-app"] }
-      .raises(RuntimeError, "mkdir: cannot create directory ‘kamal_lock-app’: File exists")
+      .with { |*args| args == [ :mkdir, "-p", ".kamal/locks" ] }
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |*arg| arg[0..1] == [ :mkdir, ".kamal/locks/app" ] }
+      .raises(RuntimeError, "mkdir: cannot create directory ‘kamal/locks/app’: File exists")
 
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_debug)
-      .with(:stat, ".kamal/lock-app", ">", "/dev/null", "&&", :cat, ".kamal/lock-app/details", "|", :base64, "-d")
+      .with(:stat, ".kamal/locks/app", ">", "/dev/null", "&&", :cat, ".kamal/locks/app/details", "|", :base64, "-d")
 
     assert_raises(Kamal::Cli::LockError) do
       run_command("deploy")
@@ -85,7 +123,10 @@ class CliMainTest < CliTestCase
       .with { |*args| args == [ :mkdir, "-p", ".kamal" ] }
 
     SSHKit::Backend::Abstract.any_instance.stubs(:execute)
-      .with { |*arg| arg[0..1] == [:mkdir, ".kamal/lock-app"] }
+      .with { |*args| args == [ :mkdir, "-p", ".kamal/locks" ] }
+
+    SSHKit::Backend::Abstract.any_instance.stubs(:execute)
+      .with { |*arg| arg[0..1] == [ :mkdir, ".kamal/locks/app" ] }
       .raises(SocketError, "getaddrinfo: nodename nor servname provided, or not known")
 
     assert_raises(SSHKit::Runner::ExecuteError) do
@@ -100,11 +141,11 @@ class CliMainTest < CliTestCase
       .with("kamal:cli:registry:login", [], invoke_options)
       .raises(RuntimeError)
 
-    assert !KAMAL.holding_lock?
+    assert_not KAMAL.holding_lock?
     assert_raises(RuntimeError) do
       stderred { run_command("deploy") }
     end
-    assert !KAMAL.holding_lock?
+    assert_not KAMAL.holding_lock?
   end
 
   test "deploy with skipped hooks" do
@@ -112,23 +153,38 @@ class CliMainTest < CliTestCase
 
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:traefik:boot", [], 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:healthcheck:perform", [], 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)
 
     run_command("deploy", "--skip_hooks") do
-      refute_match /Running the post-deploy hook.../, output
+      assert_no_match /Running the post-deploy hook.../, output
     end
   end
 
+  test "deploy without healthcheck if primary host doesn't have proxy" do
+    invoke_options = { "config_file" => "test/fixtures/deploy_workers_only.yml", "version" => "999", "skip_hooks" => false }
+
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:healthcheck:perform", [], invoke_options).never
+
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:registry:login", [], invoke_options)
+    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)
+
+    run_command("deploy", config_file: "deploy_workers_only")
+  end
+
   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)
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:build:deliver", [], invoke_options)
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:traefik:boot", [], 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:healthcheck:perform", [], 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)
@@ -196,18 +252,8 @@ class CliMainTest < CliTestCase
       SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
         .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=#{role}", "--filter", "status=running", "--filter", "status=restarting", "--latest", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-#{role}-}; done", raise_on_non_zero_exit: false)
         .returns("version-to-rollback\n").at_least_once
-      SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-        .with(:docker, :container, :ls, "--all", "--filter", "name=^app-#{role}-123$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-        .returns("running").at_least_once # health check
     end
 
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :inspect, "-f '{{ range .Mounts }}{{printf \"%s %s\\n\" .Source .Destination}}{{ end }}'", "app-web-version-to-rollback", "|", :awk, "'$2 == \"/tmp/kamal-cord\" {print $1}'", :raise_on_non_zero_exit => false)
-      .returns("corddirectory").at_least_once # health check
-
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-version-to-rollback$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-      .returns("unhealthy").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" }
@@ -232,9 +278,6 @@ class CliMainTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
       .with(:docker, :ps, "--filter", "label=service=app", "--filter", "label=role=web", "--filter", "status=running", "--filter", "status=restarting", "--latest", "--format", "\"{{.Names}}\"", "|", "while read line; do echo ${line#app-web-}; done", raise_on_non_zero_exit: false)
       .returns("").at_least_once
-    SSHKit::Backend::Abstract.any_instance.expects(:capture_with_info)
-      .with(:docker, :container, :ls, "--all", "--filter", "name=^app-web-123$", "--quiet", "|", :xargs, :docker, :inspect, "--format", "'{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}'")
-      .returns("running").at_least_once # health check
 
     run_command("rollback", "123").tap do |output|
       assert_match "docker run --detach --restart unless-stopped --name app-web-123", output
@@ -243,7 +286,7 @@ class CliMainTest < CliTestCase
   end
 
   test "details" do
-    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:traefik:details")
+    Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:proxy:details")
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:app:details")
     Kamal::Cli::Main.any_instance.expects(:invoke).with("kamal:cli:accessory:details", [ "all" ])
 
@@ -261,8 +304,8 @@ class CliMainTest < CliTestCase
     run_command("config", config_file: "deploy_simple").tap do |output|
       config = YAML.load(output)
 
-      assert_equal ["web"], config[:roles]
-      assert_equal ["1.1.1.1", "1.1.1.2"], config[:hosts]
+      assert_equal [ "web" ], config[:roles]
+      assert_equal [ "1.1.1.1", "1.1.1.2" ], config[:hosts]
       assert_equal "999", config[:version]
       assert_equal "dhh/app", config[:repository]
       assert_equal "dhh/app:999", config[:absolute_image]
@@ -274,8 +317,8 @@ class CliMainTest < CliTestCase
     run_command("config", config_file: "deploy_with_roles").tap do |output|
       config = YAML.load(output)
 
-      assert_equal ["web", "workers"], config[:roles]
-      assert_equal ["1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4"], config[:hosts]
+      assert_equal [ "web", "workers" ], config[:roles]
+      assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], config[:hosts]
       assert_equal "999", config[:version]
       assert_equal "registry.digitalocean.com/dhh/app", config[:repository]
       assert_equal "registry.digitalocean.com/dhh/app:999", config[:absolute_image]
@@ -283,12 +326,35 @@ class CliMainTest < CliTestCase
     end
   end
 
+  test "config with primary web role override" do
+    run_command("config", config_file: "deploy_primary_web_role_override").tap do |output|
+      config = YAML.load(output)
+
+      assert_equal [ "web_chicago", "web_tokyo" ], config[:roles]
+      assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], config[:hosts]
+      assert_equal "1.1.1.3", config[:primary_host]
+    end
+  end
+
   test "config with destination" do
     run_command("config", "-d", "world", config_file: "deploy_for_dest").tap do |output|
       config = YAML.load(output)
 
-      assert_equal ["web"], config[:roles]
-      assert_equal ["1.1.1.1", "1.1.1.2"], config[:hosts]
+      assert_equal [ "web" ], config[:roles]
+      assert_equal [ "1.1.1.1", "1.1.1.2" ], config[:hosts]
+      assert_equal "999", config[:version]
+      assert_equal "registry.digitalocean.com/dhh/app", config[:repository]
+      assert_equal "registry.digitalocean.com/dhh/app:999", config[:absolute_image]
+      assert_equal "app-999", config[:service_with_version]
+    end
+  end
+
+  test "config with aliases" do
+    run_command("config", config_file: "deploy_with_aliases").tap do |output|
+      config = YAML.load(output)
+
+      assert_equal [ "web", "web_tokyo", "workers", "workers_tokyo" ], config[:roles]
+      assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], config[:hosts]
       assert_equal "999", config[:version]
       assert_equal "registry.digitalocean.com/dhh/app", config[:repository]
       assert_equal "registry.digitalocean.com/dhh/app:999", config[:absolute_image]
@@ -385,9 +451,9 @@ class CliMainTest < CliTestCase
 
   test "remove with confirmation" do
     run_command("remove", "-y", config_file: "deploy_with_accessories").tap do |output|
-      assert_match /docker container stop traefik/, output
-      assert_match /docker container prune --force --filter label=org.opencontainers.image.title=Traefik/, output
-      assert_match /docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik/, output
+      assert_match /docker container stop mproxy/, output
+      assert_match /docker container prune --force --filter label=org.opencontainers.image.title=mproxy/, output
+      assert_match /docker image prune --all --force --filter label=org.opencontainers.image.title=mproxy/, output
 
       assert_match /docker ps --quiet --filter label=service=app | xargs docker stop/, output
       assert_match /docker container prune --force --filter label=service=app/, output
@@ -414,6 +480,6 @@ class CliMainTest < CliTestCase
 
   private
     def run_command(*command, config_file: "deploy_simple")
-      stdouted { Kamal::Cli::Main.start([*command, "-c", "test/fixtures/#{config_file}.yml"]) }
+      stdouted { Kamal::Cli::Main.start([ *command, "-c", "test/fixtures/#{config_file}.yml" ]) }
     end
 end

test/cli/proxy_test.rb

@@ -0,0 +1,96 @@
+require_relative "cli_test_case"
+
+class CliProxyTest < CliTestCase
+  test "boot" do
+    run_command("boot").tap do |output|
+      assert_match "docker login", output
+      assert_match "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}", output
+    end
+  end
+
+  test "reboot" do
+    Kamal::Commands::Registry.any_instance.expects(:login).twice
+
+    run_command("reboot", "-y").tap do |output|
+      assert_match "docker container stop mproxy", output
+      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=mproxy", output
+      assert_match "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}", output
+    end
+  end
+
+  test "reboot --rolling" do
+    Object.any_instance.stubs(:sleep)
+
+    run_command("reboot", "--rolling", "-y").tap do |output|
+      assert_match "Running docker container prune --force --filter label=org.opencontainers.image.title=mproxy on 1.1.1.1", output
+    end
+  end
+
+  test "start" do
+    run_command("start").tap do |output|
+      assert_match "docker container start mproxy", output
+    end
+  end
+
+  test "stop" do
+    run_command("stop").tap do |output|
+      assert_match "docker container stop mproxy", output
+    end
+  end
+
+  test "restart" do
+    Kamal::Cli::Proxy.any_instance.expects(:stop)
+    Kamal::Cli::Proxy.any_instance.expects(:start)
+
+    run_command("restart")
+  end
+
+  test "details" do
+    run_command("details").tap do |output|
+      assert_match "docker ps --filter name=^mproxy$", output
+    end
+  end
+
+  test "logs" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:capture)
+      .with(:docker, :logs, "mproxy", " --tail 100", "--timestamps", "2>&1")
+      .returns("Log entry")
+
+    run_command("logs").tap do |output|
+      assert_match "Proxy Host: 1.1.1.1", output
+      assert_match "Log entry", output
+    end
+  end
+
+  test "logs with follow" do
+    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
+      .with("ssh -t root@1.1.1.1 -p 22 'docker logs mproxy --timestamps --tail 10 --follow 2>&1'")
+
+    assert_match "docker logs mproxy --timestamps --tail 10 --follow", run_command("logs", "--follow")
+  end
+
+  test "remove" do
+    Kamal::Cli::Proxy.any_instance.expects(:stop)
+    Kamal::Cli::Proxy.any_instance.expects(:remove_container)
+    Kamal::Cli::Proxy.any_instance.expects(:remove_image)
+
+    run_command("remove")
+  end
+
+  test "remove_container" do
+    run_command("remove_container").tap do |output|
+      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=mproxy", output
+    end
+  end
+
+  test "remove_image" do
+    run_command("remove_image").tap do |output|
+      assert_match "docker image prune --all --force --filter label=org.opencontainers.image.title=mproxy", output
+    end
+  end
+
+  private
+    def run_command(*command)
+      stdouted { Kamal::Cli::Proxy.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
+    end
+end

test/cli/prune_test.rb

@@ -20,10 +20,19 @@ class CliPruneTest < CliTestCase
       assert_match /docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +6 | while read container_id; do docker rm $container_id; done on 1.1.1.\d/, output
       assert_match /docker container prune --force --filter label=service=healthcheck-app on 1.1.1.\d/, output
      end
+
+    run_command("containers", "--retain", "10").tap do |output|
+      assert_match /docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +11 | while read container_id; do docker rm $container_id; done on 1.1.1.\d/, output
+      assert_match /docker container prune --force --filter label=service=healthcheck-app on 1.1.1.\d/, output
+    end
+
+    assert_raises(RuntimeError, "retain must be at least 1") do
+      run_command("containers", "--retain", "0")
+    end
   end
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Prune.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Kamal::Cli::Prune.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
     end
 end

test/cli/registry_test.rb

@@ -16,6 +16,6 @@ class CliRegistryTest < CliTestCase
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Registry.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Kamal::Cli::Registry.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
     end
 end

test/cli/server_test.rb

@@ -4,6 +4,7 @@ class CliServerTest < CliTestCase
   test "bootstrap already installed" do
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, "-v", raise_on_non_zero_exit: false).returns(true).at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:mkdir, "-p", ".kamal").returns("").at_least_once
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, :network, :create, :kamal).returns("").at_least_once
 
     assert_equal "", run_command("bootstrap")
   end
@@ -12,6 +13,7 @@ class CliServerTest < CliTestCase
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, "-v", raise_on_non_zero_exit: false).returns(false).at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with('[ "${EUID:-$(id -u)}" -eq 0 ] || command -v sudo >/dev/null || command -v su >/dev/null', raise_on_non_zero_exit: false).returns(false).at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:mkdir, "-p", ".kamal").returns("").at_least_once
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, :network, :create, :kamal).returns("").at_least_once
 
     assert_raise RuntimeError, "Docker is not installed on 1.1.1.1, 1.1.1.3, 1.1.1.4, 1.1.1.2 and can't be automatically installed without having root access and the `curl` command available. Install Docker manually: https://docs.docker.com/engine/install/" do
       run_command("bootstrap")
@@ -21,18 +23,22 @@ class CliServerTest < CliTestCase
   test "bootstrap install as root user" do
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, "-v", raise_on_non_zero_exit: false).returns(false).at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with('[ "${EUID:-$(id -u)}" -eq 0 ] || command -v sudo >/dev/null || command -v su >/dev/null', raise_on_non_zero_exit: false).returns(true).at_least_once
-    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:curl, "-fsSL", "https://get.docker.com", "|", :sh).at_least_once
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:sh, "-c", "'curl -fsSL https://get.docker.com || wget -O - https://get.docker.com || echo \"exit 1\"'", "|", :sh).at_least_once
     SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:mkdir, "-p", ".kamal").returns("").at_least_once
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(:docker, :network, :create, :kamal).returns("").at_least_once
+    Kamal::Commands::Hook.any_instance.stubs(:hook_exists?).returns(true)
+    SSHKit::Backend::Abstract.any_instance.expects(:execute).with(".kamal/hooks/docker-setup", anything).at_least_once
 
     run_command("bootstrap").tap do |output|
       ("1.1.1.1".."1.1.1.4").map do |host|
         assert_match "Missing Docker on #{host}. Installing…", output
+        assert_match "Running the docker-setup hook", output
       end
     end
   end
 
   private
     def run_command(*command)
-      stdouted { Kamal::Cli::Server.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+      stdouted { Kamal::Cli::Server.start([ *command, "-c", "test/fixtures/deploy_with_accessories.yml" ]) }
     end
 end

test/cli/traefik_test.rb

@@ -1,96 +0,0 @@
-require_relative "cli_test_case"
-
-class CliTraefikTest < CliTestCase
-  test "boot" do
-    run_command("boot").tap do |output|
-      assert_match "docker login", output
-      assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{Kamal::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"", output
-    end
-  end
-
-  test "reboot" do
-    Kamal::Commands::Registry.any_instance.expects(:login).twice
-
-    run_command("reboot").tap do |output|
-      assert_match "docker container stop traefik", output
-      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
-      assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{Kamal::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"", output
-    end
-  end
-
-  test "reboot --rolling" do
-    Object.any_instance.stubs(:sleep)
-
-    run_command("reboot", "--rolling").tap do |output|
-      assert_match "Running docker container prune --force --filter label=org.opencontainers.image.title=Traefik on 1.1.1.1", output
-    end
-  end
-
-  test "start" do
-    run_command("start").tap do |output|
-      assert_match "docker container start traefik", output
-    end
-  end
-
-  test "stop" do
-    run_command("stop").tap do |output|
-      assert_match "docker container stop traefik", output
-    end
-  end
-
-  test "restart" do
-    Kamal::Cli::Traefik.any_instance.expects(:stop)
-    Kamal::Cli::Traefik.any_instance.expects(:start)
-
-    run_command("restart")
-  end
-
-  test "details" do
-    run_command("details").tap do |output|
-      assert_match "docker ps --filter name=^traefik$", output
-    end
-  end
-
-  test "logs" do
-    SSHKit::Backend::Abstract.any_instance.stubs(:capture)
-      .with(:docker, :logs, "traefik", " --tail 100", "--timestamps", "2>&1")
-      .returns("Log entry")
-
-    run_command("logs").tap do |output|
-      assert_match "Traefik Host: 1.1.1.1", output
-      assert_match "Log entry", output
-    end
-  end
-
-  test "logs with follow" do
-    SSHKit::Backend::Abstract.any_instance.stubs(:exec)
-      .with("ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1'")
-
-    assert_match "docker logs traefik --timestamps --tail 10 --follow", run_command("logs", "--follow")
-  end
-
-  test "remove" do
-    Kamal::Cli::Traefik.any_instance.expects(:stop)
-    Kamal::Cli::Traefik.any_instance.expects(:remove_container)
-    Kamal::Cli::Traefik.any_instance.expects(:remove_image)
-
-    run_command("remove")
-  end
-
-  test "remove_container" do
-    run_command("remove_container").tap do |output|
-      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
-    end
-  end
-
-  test "remove_image" do
-    run_command("remove_image").tap do |output|
-      assert_match "docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik", output
-    end
-  end
-
-  private
-    def run_command(*command)
-      stdouted { Kamal::Cli::Traefik.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
-    end
-end

test/commander_test.rb

@@ -14,6 +14,20 @@ class CommanderTest < ActiveSupport::TestCase
 
     @kamal.specific_hosts = [ "1.1.1.1", "1.1.1.2" ]
     assert_equal [ "1.1.1.1", "1.1.1.2" ], @kamal.hosts
+
+    @kamal.specific_hosts = [ "1.1.1.1*" ]
+    assert_equal [ "1.1.1.1" ], @kamal.hosts
+
+    @kamal.specific_hosts = [ "1.1.1.*", "*.1.2.*" ]
+    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @kamal.hosts
+
+    @kamal.specific_hosts = [ "*" ]
+    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @kamal.hosts
+
+    exception = assert_raises(ArgumentError) do
+      @kamal.specific_hosts = [ "*miss" ]
+    end
+    assert_match /hosts match for \*miss/, exception.message
   end
 
   test "filtering hosts by filtering roles" do
@@ -21,6 +35,11 @@ class CommanderTest < ActiveSupport::TestCase
 
     @kamal.specific_roles = [ "web" ]
     assert_equal [ "1.1.1.1", "1.1.1.2" ], @kamal.hosts
+
+    exception = assert_raises(ArgumentError) do
+      @kamal.specific_roles = [ "*miss" ]
+    end
+    assert_match /roles match for \*miss/, exception.message
   end
 
   test "filtering roles" do
@@ -28,6 +47,20 @@ class CommanderTest < ActiveSupport::TestCase
 
     @kamal.specific_roles = [ "workers" ]
     assert_equal [ "workers" ], @kamal.roles.map(&:name)
+
+    @kamal.specific_roles = [ "w*" ]
+    assert_equal [ "web", "workers" ], @kamal.roles.map(&:name)
+
+    @kamal.specific_roles = [ "we*", "*orkers" ]
+    assert_equal [ "web", "workers" ], @kamal.roles.map(&:name)
+
+    @kamal.specific_roles = [ "*" ]
+    assert_equal [ "web", "workers" ], @kamal.roles.map(&:name)
+
+    exception = assert_raises(ArgumentError) do
+      @kamal.specific_roles = [ "*miss" ]
+    end
+    assert_match /roles match for \*miss/, exception.message
   end
 
   test "filtering roles by filtering hosts" do
@@ -50,14 +83,14 @@ class CommanderTest < ActiveSupport::TestCase
   end
 
   test "primary_role" do
-    assert_equal "web", @kamal.primary_role
+    assert_equal "web", @kamal.primary_role.name
     @kamal.specific_roles = "workers"
-    assert_equal "workers", @kamal.primary_role
+    assert_equal "workers", @kamal.primary_role.name
   end
 
   test "roles_on" do
-    assert_equal [ "web" ], @kamal.roles_on("1.1.1.1")
-    assert_equal [ "workers" ], @kamal.roles_on("1.1.1.3")
+    assert_equal [ "web" ], @kamal.roles_on("1.1.1.1").map(&:name)
+    assert_equal [ "workers" ], @kamal.roles_on("1.1.1.3").map(&:name)
   end
 
   test "default group strategy" do
@@ -76,6 +109,21 @@ class CommanderTest < ActiveSupport::TestCase
     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)
+
+    @kamal.specific_roles = [ "web_*" ]
+    assert_equal [ "web_chicago", "web_tokyo" ], @kamal.roles.map(&:name)
+    assert_equal "web_tokyo", @kamal.primary_role.name
+    assert_equal "1.1.1.3", @kamal.primary_host
+  end
+
   private
     def configure_with(variant)
       @kamal = Kamal::Commander.new.tap do |kamal|

test/commands/accessory_test.rb

@@ -34,6 +34,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
           ]
         },
         "busybox" => {
+          "service" => "custom-busybox",
           "image" => "busybox:latest",
           "host" => "1.1.1.7"
         }
@@ -49,15 +50,15 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-mysql.env --label service=\"app-mysql\" private.registry/mysql:8.0",
+      "docker run --name app-mysql --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 3306:3306 --env-file .kamal/env/accessories/app-mysql.env --env MYSQL_ROOT_HOST=\"%\" --label service=\"app-mysql\" private.registry/mysql:8.0",
       new_command(:mysql).run.join(" ")
 
     assert_equal \
-      "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-redis.env --volume /var/lib/redis:/data --label service=\"app-redis\" --label cache=\"true\" redis:latest",
+      "docker run --name app-redis --detach --restart unless-stopped --log-opt max-size=\"10m\" --publish 6379:6379 --env-file .kamal/env/accessories/app-redis.env --env SOMETHING=\"else\" --volume /var/lib/redis:/data --label service=\"app-redis\" --label cache=\"true\" redis:latest",
       new_command(:redis).run.join(" ")
 
     assert_equal \
-      "docker run --name app-busybox --detach --restart unless-stopped --log-opt max-size=\"10m\" --env-file .kamal/env/accessories/app-busybox.env --label service=\"app-busybox\" busybox:latest",
+      "docker run --name custom-busybox --detach --restart unless-stopped --log-opt max-size=\"10m\" --env-file .kamal/env/accessories/custom-busybox.env --label service=\"custom-busybox\" busybox:latest",
       new_command(:busybox).run.join(" ")
   end
 
@@ -65,7 +66,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
     @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
 
     assert_equal \
-      "docker run --name app-busybox --detach --restart unless-stopped --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --env-file .kamal/env/accessories/app-busybox.env --label service=\"app-busybox\" busybox:latest",
+      "docker run --name custom-busybox --detach --restart unless-stopped --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --env-file .kamal/env/accessories/custom-busybox.env --label service=\"custom-busybox\" busybox:latest",
       new_command(:busybox).run.join(" ")
   end
 
@@ -90,7 +91,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "execute in new container" do
     assert_equal \
-      "docker run --rm --env-file .kamal/env/accessories/app-mysql.env private.registry/mysql:8.0 mysql -u root",
+      "docker run --rm --env-file .kamal/env/accessories/app-mysql.env --env MYSQL_ROOT_HOST=\"%\" private.registry/mysql:8.0 mysql -u root",
       new_command(:mysql).execute_in_new_container("mysql", "-u", "root").join(" ")
   end
 
@@ -102,14 +103,14 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "execute in new container over ssh" do
     new_command(:mysql).stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
-      assert_match %r|docker run -it --rm --env-file .kamal/env/accessories/app-mysql.env private.registry/mysql:8.0 mysql -u root|,
+      assert_match %r{docker run -it --rm --env-file .kamal/env/accessories/app-mysql.env --env MYSQL_ROOT_HOST=\"%\" private.registry/mysql:8.0 mysql -u root},
         new_command(:mysql).execute_in_new_container_over_ssh("mysql", "-u", "root")
     end
   end
 
   test "execute in existing container over ssh" do
     new_command(:mysql).stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
-      assert_match %r|docker exec -it app-mysql mysql -u root|,
+      assert_match %r{docker exec -it app-mysql mysql -u root},
         new_command(:mysql).execute_in_existing_container_over_ssh("mysql", "-u", "root")
     end
   end
@@ -128,7 +129,7 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "follow logs" do
     assert_equal \
-      "ssh -t root@1.1.1.5 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'",
+      "ssh -t root@1.1.1.5 -p 22 'docker logs app-mysql --timestamps --tail 10 --follow 2>&1'",
       new_command(:mysql).follow_logs
   end
 

test/commands/app_test.rb

@@ -14,21 +14,21 @@ class CommandsAppTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/up || exit 1\" --health-interval \"1s\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
   test "run with hostname" do
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 --hostname myhost -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal --hostname myhost -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/up || exit 1\" --health-interval \"1s\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run(hostname: "myhost").join(" ")
   end
 
   test "run with volumes" do
-    @config[:volumes] = ["/local/path:/container/path" ]
+    @config[:volumes] = [ "/local/path:/container/path" ]
 
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --volume /local/path:/container/path --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/up || exit 1\" --health-interval \"1s\" --log-opt max-size=\"10m\" --volume /local/path:/container/path --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
@@ -36,7 +36,7 @@ class CommandsAppTest < ActiveSupport::TestCase
     @config[:healthcheck] = { "path" => "/healthz" }
 
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/healthz || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/healthz || exit 1\" --health-interval \"1s\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
@@ -44,7 +44,7 @@ class CommandsAppTest < ActiveSupport::TestCase
     @config[:healthcheck] = { "cmd" => "/bin/up" }
 
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(/bin/up) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"/bin/up\" --health-interval \"1s\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
@@ -52,14 +52,14 @@ class CommandsAppTest < ActiveSupport::TestCase
     @config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "healthcheck" => { "cmd" => "/bin/healthy" } } }
 
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(/bin/healthy) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"/bin/healthy\" --health-interval \"1s\" --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
   test "run with custom options" do
     @config[:servers] = { "web" => [ "1.1.1.1" ], "jobs" => { "hosts" => [ "1.1.1.2" ], "cmd" => "bin/jobs", "options" => { "mount" => "somewhere", "cap-add" => true } } }
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-jobs-999 -e KAMAL_CONTAINER_NAME=\"app-jobs-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-jobs.env --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"jobs\" --mount \"somewhere\" --cap-add dhh/app:999 bin/jobs",
+      "docker run --detach --restart unless-stopped --name app-jobs-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-jobs-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-jobs.env --log-opt max-size=\"10m\" --label service=\"app\" --label role=\"jobs\" --label destination --mount \"somewhere\" --cap-add dhh/app:999 bin/jobs",
       new_command(role: "jobs").run.join(" ")
   end
 
@@ -67,7 +67,16 @@ class CommandsAppTest < ActiveSupport::TestCase
     @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
 
     assert_equal \
-      "docker run --detach --restart unless-stopped --name app-web-999 -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"(curl -f http://localhost:3000/up || exit 1) && (stat /tmp/kamal-cord/cord > /dev/null || exit 1)\" --health-interval \"1s\" --volume $(pwd)/.kamal/cords/app-web-12345678901234567890123456789012:/tmp/kamal-cord --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app\" --label role=\"web\" --label traefik.http.services.app-web.loadbalancer.server.scheme=\"http\" --label traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.app-web.priority=\"2\" --label traefik.http.middlewares.app-web-retry.retry.attempts=\"5\" --label traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\" --label traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\" dhh/app:999",
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/up || exit 1\" --health-interval \"1s\" --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
+      new_command.run.join(" ")
+  end
+
+  test "run with role logging config" do
+    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "10m", "max-file" => "3" } }
+    @config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "logging" => { "driver" => "local", "options" => { "max-size" => "100m" } } } }
+
+    assert_equal \
+      "docker run --detach --restart unless-stopped --name app-web-999 --network kamal -e KAMAL_CONTAINER_NAME=\"app-web-999\" -e KAMAL_VERSION=\"999\" --env-file .kamal/env/roles/app-web.env --health-cmd \"curl -f http://localhost:3000/up || exit 1\" --health-interval \"1s\" --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label service=\"app\" --label role=\"web\" --label destination dhh/app:999",
       new_command.run.join(" ")
   end
 
@@ -145,12 +154,20 @@ class CommandsAppTest < ActiveSupport::TestCase
 
   test "follow logs" do
     assert_match \
-      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1",
+      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --follow 2>&1",
       new_command.follow_logs(host: "app-1")
 
     assert_match \
-      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 10 --follow 2>&1 | grep \"Completed\"",
+      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --follow 2>&1 | grep \"Completed\"",
       new_command.follow_logs(host: "app-1", grep: "Completed")
+
+    assert_match \
+      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 123 --follow 2>&1",
+      new_command.follow_logs(host: "app-1", lines: 123)
+
+    assert_match \
+      "docker ps --quiet --filter label=service=app --filter label=role=web --filter status=running --filter status=restarting --latest | xargs docker logs --timestamps --tail 123 --follow 2>&1 | grep \"Completed\"",
+      new_command.follow_logs(host: "app-1", lines: 123, grep: "Completed")
   end
 
 
@@ -174,48 +191,53 @@ class CommandsAppTest < ActiveSupport::TestCase
   end
 
   test "execute in new container over ssh" do
-    assert_match %r|docker run -it --rm --env-file .kamal/env/roles/app-web.env dhh/app:999 bin/rails c|,
+    assert_match %r{docker run -it --rm --env-file .kamal/env/roles/app-web.env dhh/app:999 bin/rails c},
       new_command.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
   end
 
   test "execute in new container with custom options over ssh" do
     @config[:servers] = { "web" => { "hosts" => [ "1.1.1.1" ], "options" => { "mount" => "somewhere", "cap-add" => true } } }
-    assert_match %r|docker run -it --rm --env-file .kamal/env/roles/app-web.env --mount \"somewhere\" --cap-add dhh/app:999 bin/rails c|,
+    assert_match %r{docker run -it --rm --env-file .kamal/env/roles/app-web.env --mount \"somewhere\" --cap-add dhh/app:999 bin/rails c},
       new_command.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
   end
 
   test "execute in existing container over ssh" do
-    assert_match %r|docker exec -it app-web-999 bin/rails c|,
+    assert_match %r{docker exec -it app-web-999 bin/rails c},
       new_command.execute_in_existing_container_over_ssh("bin/rails", "c", host: "app-1")
   end
 
   test "run over ssh" do
-    assert_equal "ssh -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -t root@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with custom user" do
     @config[:ssh] = { "user" => "app" }
-    assert_equal "ssh -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -t app@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+  end
+
+  test "run over ssh with custom port" do
+    @config[:ssh] = { "port" => "2222" }
+    assert_equal "ssh -t root@1.1.1.1 -p 2222 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with proxy" do
     @config[:ssh] = { "proxy" => "2.2.2.2" }
-    assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with proxy user" do
     @config[:ssh] = { "proxy" => "app@2.2.2.2" }
-    assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with custom user with proxy" do
     @config[:ssh] = { "user" => "app", "proxy" => "2.2.2.2" }
-    assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "run over ssh with proxy_command" do
     @config[:ssh] = { "proxy_command" => "ssh -W %h:%p user@proxy-server" }
-    assert_equal "ssh -o ProxyCommand='ssh -W %h:%p user@proxy-server' -t root@1.1.1.1 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
+    assert_equal "ssh -o ProxyCommand='ssh -W %h:%p user@proxy-server' -t root@1.1.1.1 -p 22 'ls'", new_command.run_over_ssh("ls", host: "1.1.1.1")
   end
 
   test "current_running_container_id" do
@@ -331,20 +353,6 @@ class CommandsAppTest < ActiveSupport::TestCase
     assert_equal "rm -f .kamal/env/roles/app-web.env", new_command.remove_env_file.join(" ")
   end
 
-  test "cord" do
-    assert_equal "docker inspect -f '{{ range .Mounts }}{{printf \"%s %s\\n\" .Source .Destination}}{{ end }}' app-web-123 | awk '$2 == \"/tmp/kamal-cord\" {print $1}'", new_command.cord(version: 123).join(" ")
-  end
-
-  test "tie cord" do
-    assert_equal "mkdir -p . ; touch cordfile", new_command.tie_cord("cordfile").join(" ")
-    assert_equal "mkdir -p corddir ; touch corddir/cordfile", new_command.tie_cord("corddir/cordfile").join(" ")
-    assert_equal "mkdir -p /corddir ; touch /corddir/cordfile", new_command.tie_cord("/corddir/cordfile").join(" ")
-  end
-
-  test "cut cord" do
-    assert_equal "rm -r corddir", new_command.cut_cord("corddir").join(" ")
-  end
-
   test "extract assets" do
     assert_equal [
       :mkdir, "-p", ".kamal/assets/extracted/app-web-999", "&&",
@@ -365,7 +373,7 @@ class CommandsAppTest < ActiveSupport::TestCase
       :mkdir, "-p", ".kamal/assets/volumes/app-web-999", ";",
       :cp, "-rnT", ".kamal/assets/extracted/app-web-999", ".kamal/assets/volumes/app-web-999", ";",
       :cp, "-rnT", ".kamal/assets/extracted/app-web-999", ".kamal/assets/volumes/app-web-998", "|| true", ";",
-      :cp, "-rnT", ".kamal/assets/extracted/app-web-998", ".kamal/assets/volumes/app-web-999", "|| true",
+      :cp, "-rnT", ".kamal/assets/extracted/app-web-998", ".kamal/assets/volumes/app-web-999", "|| true"
     ], new_command(asset_path: "/public/assets").sync_asset_volumes(old_version: 998)
   end
 
@@ -378,6 +386,7 @@ class CommandsAppTest < ActiveSupport::TestCase
 
   private
     def new_command(role: "web", **additional_config)
-      Kamal::Commands::App.new(Kamal::Configuration.new(@config.merge(additional_config), destination: @destination, version: "999"), role: role)
+      config = Kamal::Configuration.new(@config.merge(additional_config), destination: @destination, version: "999")
+      Kamal::Commands::App.new(config, role: config.role(role))
     end
 end

test/commands/builder_test.rb

@@ -6,10 +6,10 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   end
 
   test "target multiarch by default" do
-    builder = new_builder_command(builder: { "cache" => { "type" => "gha" }})
+    builder = new_builder_command(builder: { "cache" => { "type" => "gha" } })
     assert_equal "multiarch", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
       builder.push.join(" ")
   end
 
@@ -17,23 +17,31 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "multiarch" => false })
     assert_equal "native", builder.name
     assert_equal \
-      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      "git archive --format=tar HEAD | docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile - && docker push dhh/app:123 && docker push dhh/app:latest",
       builder.push.join(" ")
   end
 
   test "target native cached when multiarch is off and cache is set" do
-    builder = new_builder_command(builder: { "multiarch" => false, "cache" => { "type" => "gha" }})
+    builder = new_builder_command(builder: { "multiarch" => false, "cache" => { "type" => "gha" } })
     assert_equal "native/cached", builder.name
     assert_equal \
-      "docker buildx build --push -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "git archive --format=tar HEAD | docker buildx build --push -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
       builder.push.join(" ")
   end
 
   test "target multiarch remote when local and remote is set" do
-    builder = new_builder_command(builder: { "local" => { }, "remote" => { }, "cache" => { "type" => "gha" } })
+    builder = new_builder_command(builder: { "local" => {}, "remote" => {}, "cache" => { "type" => "gha" } })
     assert_equal "multiarch/remote", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
+      builder.push.join(" ")
+  end
+
+  test "target multiarch local when arch is set" do
+    builder = new_builder_command(builder: { "local" => { "arch" => "amd64" } })
+    assert_equal "multiarch", builder.name
+    assert_equal \
+      "git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile -",
       builder.push.join(" ")
   end
 
@@ -41,7 +49,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
     builder = new_builder_command(builder: { "remote" => { "arch" => "amd64" }, "cache" => { "type" => "gha" } })
     assert_equal "native/remote", builder.name
     assert_equal \
-      "docker buildx build --push --platform linux/amd64 --builder kamal-app-native-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile .",
+      "git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64 --builder kamal-app-native-remote -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile -",
       builder.push.join(" ")
   end
 
@@ -53,7 +61,7 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   end
 
   test "build secrets" do
-    builder = new_builder_command(builder: { "secrets" => ["token_a", "token_b"] })
+    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",
       builder.target.build_options.join(" ")
@@ -85,26 +93,62 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   test "native push with build args" do
     builder = new_builder_command(builder: { "multiarch" => false, "args" => { "a" => 1, "b" => 2 } })
     assert_equal \
-      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      "git archive --format=tar HEAD | docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile - && docker push dhh/app:123 && docker push dhh/app:latest",
       builder.push.join(" ")
   end
 
   test "multiarch push with build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
     assert_equal \
-      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile .",
+      "git archive --format=tar HEAD | docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --build-arg a=\"1\" --build-arg b=\"2\" --file Dockerfile -",
       builder.push.join(" ")
   end
 
   test "native push with build secrets" do
     builder = new_builder_command(builder: { "multiarch" => false, "secrets" => [ "a", "b" ] })
     assert_equal \
-      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"a\" --secret id=\"b\" --file Dockerfile . && docker push dhh/app:123 && docker push dhh/app:latest",
+      "git archive --format=tar HEAD | docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --secret id=\"a\" --secret id=\"b\" --file Dockerfile - && docker push dhh/app:123 && docker push dhh/app:latest",
       builder.push.join(" ")
   end
 
+  test "build with ssh agent socket" do
+    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",
+      builder.target.build_options.join(" ")
+  end
+
   test "validate image" do
-    assert_equal "docker inspect -f '{{ .Config.Labels.service }}' dhh/app:123 | grep -x app || (echo \"Image dhh/app:123 is missing the `service` label\" && exit 1)", new_builder_command.validate_image.join(" ")
+    assert_equal "docker inspect -f '{{ .Config.Labels.service }}' dhh/app:123 | grep -x app || (echo \"Image dhh/app:123 is missing the 'service' label\" && exit 1)", new_builder_command.validate_image.join(" ")
+  end
+
+  test "multiarch context build" do
+    builder = new_builder_command(builder: { "context" => "./foo" })
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder kamal-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ./foo",
+      builder.push.join(" ")
+  end
+
+  test "native context build" do
+    builder = new_builder_command(builder: { "multiarch" => false, "context" => "./foo" })
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ./foo && docker push dhh/app:123 && docker push dhh/app:latest",
+      builder.push.join(" ")
+  end
+
+  test "cached context build" do
+    builder = new_builder_command(builder: { "multiarch" => false, "context" => "./foo", "cache" => { "type" => "gha" } })
+    assert_equal \
+      "docker buildx build --push -t dhh/app:123 -t dhh/app:latest --cache-to type=gha --cache-from type=gha --label service=\"app\" --file Dockerfile ./foo",
+      builder.push.join(" ")
+  end
+
+  test "remote context build" do
+    builder = new_builder_command(builder: { "remote" => { "arch" => "amd64" }, "context" => "./foo" })
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64 --builder kamal-app-native-remote -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile ./foo",
+      builder.push.join(" ")
   end
 
   private

test/commands/docker_test.rb

@@ -9,7 +9,7 @@ class CommandsDockerTest < ActiveSupport::TestCase
   end
 
   test "install" do
-    assert_equal "curl -fsSL https://get.docker.com | sh", @docker.install.join(" ")
+    assert_equal "sh -c 'curl -fsSL https://get.docker.com || wget -O - https://get.docker.com || echo \"exit 1\"' | sh", @docker.install.join(" ")
   end
 
   test "installed?" do

test/commands/healthcheck_test.rb

@@ -3,8 +3,7 @@ require "test_helper"
 class CommandsHealthcheckTest < ActiveSupport::TestCase
   setup do
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
     }
   end
 

test/commands/hook_test.rb

@@ -7,8 +7,7 @@ class CommandsHookTest < ActiveSupport::TestCase
     freeze_time
 
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
     }
 
     @performer = `whoami`.strip

test/commands/lock_test.rb

@@ -3,31 +3,30 @@ require "test_helper"
 class CommandsLockTest < ActiveSupport::TestCase
   setup do
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
     }
   end
 
   test "status" do
     assert_equal \
-      "stat .kamal/lock-app > /dev/null && cat .kamal/lock-app/details | base64 -d",
+      "stat .kamal/locks/app-production > /dev/null && cat .kamal/locks/app-production/details | base64 -d",
       new_command.status.join(" ")
   end
 
   test "acquire" do
     assert_match \
-      %r{mkdir \.kamal/lock-app && echo ".*" > \.kamal/lock-app/details}m,
+      %r{mkdir \.kamal/locks/app-production && echo ".*" > \.kamal/locks/app-production/details}m,
       new_command.acquire("Hello", "123").join(" ")
   end
 
   test "release" do
     assert_match \
-      "rm .kamal/lock-app/details && rm -r .kamal/lock-app",
+      "rm .kamal/locks/app-production/details && rm -r .kamal/locks/app-production",
       new_command.release.join(" ")
   end
 
   private
     def new_command
-      Kamal::Commands::Lock.new(Kamal::Configuration.new(@config, version: "123"))
+      Kamal::Commands::Lock.new(Kamal::Configuration.new(@config, version: "123", destination: "production"))
     end
 end

test/commands/proxy_test.rb

@@ -0,0 +1,114 @@
+require "test_helper"
+
+class CommandsProxyTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
+    }
+
+    ENV["EXAMPLE_API_KEY"] = "456"
+  end
+
+  teardown do
+    ENV.delete("EXAMPLE_API_KEY")
+  end
+
+  test "run" do
+    assert_equal \
+      "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}",
+      new_command.run.join(" ")
+  end
+
+  test "run with ports configured" do
+    assert_equal \
+      "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}",
+      new_command.run.join(" ")
+  end
+
+  test "run without configuration" do
+    @config.delete(:proxy)
+
+    assert_equal \
+      "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}",
+      new_command.run.join(" ")
+  end
+
+  test "run with logging config" do
+    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
+
+    assert_equal \
+      "docker run --name mproxy --detach --restart unless-stopped --network kamal --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" #{Kamal::Commands::Proxy::DEFAULT_IMAGE}",
+      new_command.run.join(" ")
+  end
+
+  test "proxy start" do
+    assert_equal \
+      "docker container start mproxy",
+      new_command.start.join(" ")
+  end
+
+  test "proxy stop" do
+    assert_equal \
+      "docker container stop mproxy",
+      new_command.stop.join(" ")
+  end
+
+  test "proxy info" do
+    assert_equal \
+      "docker ps --filter name=^mproxy$",
+      new_command.info.join(" ")
+  end
+
+  test "proxy logs" do
+    assert_equal \
+      "docker logs mproxy --timestamps 2>&1",
+      new_command.logs.join(" ")
+  end
+
+  test "proxy logs since 2h" do
+    assert_equal \
+      "docker logs mproxy  --since 2h --timestamps 2>&1",
+      new_command.logs(since: "2h").join(" ")
+  end
+
+  test "proxy logs last 10 lines" do
+    assert_equal \
+      "docker logs mproxy  --tail 10 --timestamps 2>&1",
+      new_command.logs(lines: 10).join(" ")
+  end
+
+  test "proxy logs with grep hello!" do
+    assert_equal \
+      "docker logs mproxy --timestamps 2>&1 | grep 'hello!'",
+      new_command.logs(grep: "hello!").join(" ")
+  end
+
+  test "proxy remove container" do
+    assert_equal \
+      "docker container prune --force --filter label=org.opencontainers.image.title=mproxy",
+      new_command.remove_container.join(" ")
+  end
+
+  test "proxy remove image" do
+    assert_equal \
+      "docker image prune --all --force --filter label=org.opencontainers.image.title=mproxy",
+      new_command.remove_image.join(" ")
+  end
+
+  test "proxy follow logs" do
+    assert_equal \
+      "ssh -t root@1.1.1.1 -p 22 'docker logs mproxy --timestamps --tail 10 --follow 2>&1'",
+      new_command.follow_logs(host: @config[:servers].first)
+  end
+
+  test "proxy follow logs with grep hello!" do
+    assert_equal \
+      "ssh -t root@1.1.1.1 -p 22 'docker logs mproxy --timestamps --tail 10 --follow 2>&1 | grep \"hello!\"'",
+      new_command.follow_logs(host: @config[:servers].first, grep: "hello!")
+  end
+
+  private
+    def new_command
+      Kamal::Commands::Proxy.new(Kamal::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/prune_test.rb

@@ -3,8 +3,7 @@ require "test_helper"
 class CommandsPruneTest < ActiveSupport::TestCase
   setup do
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
     }
   end
 
@@ -23,7 +22,11 @@ class CommandsPruneTest < ActiveSupport::TestCase
   test "app containers" do
     assert_equal \
       "docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +6 | while read container_id; do docker rm $container_id; done",
-      new_command.app_containers.join(" ")
+      new_command.app_containers(retain: 5).join(" ")
+
+    assert_equal \
+      "docker ps -q -a --filter label=service=app --filter status=created --filter status=exited --filter status=dead | tail -n +4 | while read container_id; do docker rm $container_id; done",
+      new_command.app_containers(retain: 3).join(" ")
   end
 
   test "healthcheck containers" do

test/commands/registry_test.rb

@@ -15,7 +15,7 @@ class CommandsRegistryTest < ActiveSupport::TestCase
 
   test "registry login" do
     assert_equal \
-      "docker login hub.docker.com -u dhh -p secret",
+      "docker login hub.docker.com -u \"dhh\" -p \"secret\"",
       @registry.login.join(" ")
   end
 
@@ -24,7 +24,18 @@ class CommandsRegistryTest < ActiveSupport::TestCase
     @config[:registry]["password"] = [ "KAMAL_REGISTRY_PASSWORD" ]
 
     assert_equal \
-      "docker login hub.docker.com -u dhh -p more-secret",
+      "docker login hub.docker.com -u \"dhh\" -p \"more-secret\"",
+      @registry.login.join(" ")
+  ensure
+    ENV.delete("KAMAL_REGISTRY_PASSWORD")
+  end
+
+  test "registry login escape password" do
+    ENV["KAMAL_REGISTRY_PASSWORD"] = "more-secret'\""
+    @config[:registry]["password"] = [ "KAMAL_REGISTRY_PASSWORD" ]
+
+    assert_equal \
+      "docker login hub.docker.com -u \"dhh\" -p \"more-secret'\\\"\"",
       @registry.login.join(" ")
   ensure
     ENV.delete("KAMAL_REGISTRY_PASSWORD")
@@ -35,7 +46,7 @@ class CommandsRegistryTest < ActiveSupport::TestCase
     @config[:registry]["username"] = [ "KAMAL_REGISTRY_USERNAME" ]
 
     assert_equal \
-      "docker login hub.docker.com -u also-secret -p secret",
+      "docker login hub.docker.com -u \"also-secret\" -p \"secret\"",
       @registry.login.join(" ")
   ensure
     ENV.delete("KAMAL_REGISTRY_USERNAME")

test/commands/server_test.rb

@@ -3,8 +3,7 @@ require "test_helper"
 class CommandsServerTest < ActiveSupport::TestCase
   setup do
     @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ]
     }
   end
 

test/commands/traefik_test.rb

@@ -1,202 +0,0 @@
-require "test_helper"
-
-class CommandsTraefikTest < ActiveSupport::TestCase
-  setup do
-    @image = "traefik:test"
-
-    @config = {
-      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
-      traefik: { "image" => @image, "args" => { "accesslog.format" => "json", "api.insecure" => true, "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
-    }
-
-    ENV["EXAMPLE_API_KEY"] = "456"
-  end
-
-  teardown do
-    ENV.delete("EXAMPLE_API_KEY")
-  end
-
-  test "run" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["host_port"] = "8080"
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 8080:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["publish"] = false
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with ports configured" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["options"] = {"publish" => %w[9000:9000 9001:9001]}
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" --publish \"9000:9000\" --publish \"9001:9001\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with volumes configured" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["options"] = {"volume" => %w[./letsencrypt/acme.json:/letsencrypt/acme.json] }
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" --volume \"./letsencrypt/acme.json:/letsencrypt/acme.json\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with several options configured" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["options"] = {"volume" => %w[./letsencrypt/acme.json:/letsencrypt/acme.json], "publish" => %w[8080:8080], "memory" => "512m"}
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" --volume \"./letsencrypt/acme.json:/letsencrypt/acme.json\" --publish \"8080:8080\" --memory \"512m\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with labels configured" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["labels"] = { "traefik.http.routers.dashboard.service" => "api@internal", "traefik.http.routers.dashboard.middlewares" => "auth" }
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" --label traefik.http.routers.dashboard.service=\"api@internal\" --label traefik.http.routers.dashboard.middlewares=\"auth\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with env configured" do
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-
-    @config[:traefik]["env"] = { "secret" => %w[EXAMPLE_API_KEY] }
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run without configuration" do
-    @config.delete(:traefik)
-
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{Kamal::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with logging config" do
-    @config[:logging] = { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => "3" } }
-
-    assert_equal \
-      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-driver \"local\" --log-opt max-size=\"100m\" --log-opt max-file=\"3\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"DEBUG\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "run with default args overriden" do
-    @config[:traefik]["args"]["log.level"] = "ERROR"
-
-    assert_equal \
-    "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" --label traefik.http.routers.catchall.entryPoints=\"http\" --label traefik.http.routers.catchall.rule=\"PathPrefix(\\`/\\`)\" --label traefik.http.routers.catchall.service=\"unavailable\" --label traefik.http.routers.catchall.priority=\"1\" --label traefik.http.services.unavailable.loadbalancer.server.port=\"0\" #{@image} --providers.docker --log.level=\"ERROR\" --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
-      new_command.run.join(" ")
-  end
-
-  test "traefik start" do
-    assert_equal \
-      "docker container start traefik",
-      new_command.start.join(" ")
-  end
-
-  test "traefik stop" do
-    assert_equal \
-      "docker container stop traefik",
-      new_command.stop.join(" ")
-  end
-
-  test "traefik info" do
-    assert_equal \
-      "docker ps --filter name=^traefik$",
-      new_command.info.join(" ")
-  end
-
-  test "traefik logs" do
-    assert_equal \
-      "docker logs traefik --timestamps 2>&1",
-      new_command.logs.join(" ")
-  end
-
-  test "traefik logs since 2h" do
-    assert_equal \
-      "docker logs traefik  --since 2h --timestamps 2>&1",
-      new_command.logs(since: '2h').join(" ")
-  end
-
-  test "traefik logs last 10 lines" do
-    assert_equal \
-      "docker logs traefik  --tail 10 --timestamps 2>&1",
-      new_command.logs(lines: 10).join(" ")
-  end
-
-  test "traefik logs with grep hello!" do
-    assert_equal \
-      "docker logs traefik --timestamps 2>&1 | grep 'hello!'",
-      new_command.logs(grep: 'hello!').join(" ")
-  end
-
-  test "traefik remove container" do
-    assert_equal \
-      "docker container prune --force --filter label=org.opencontainers.image.title=Traefik",
-      new_command.remove_container.join(" ")
-  end
-
-  test "traefik remove image" do
-    assert_equal \
-      "docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik",
-      new_command.remove_image.join(" ")
-  end
-
-  test "traefik follow logs" do
-    assert_equal \
-      "ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1'",
-      new_command.follow_logs(host: @config[:servers].first)
-  end
-
-  test "traefik follow logs with grep hello!" do
-    assert_equal \
-      "ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1 | grep \"hello!\"'",
-      new_command.follow_logs(host: @config[:servers].first, grep: 'hello!')
-  end
-
-  test "env_file" do
-    @config[:traefik]["env"] = { "secret" => %w[EXAMPLE_API_KEY] }
-
-    assert_equal "EXAMPLE_API_KEY=456\n", new_command.env_file.to_s
-  end
-
-  test "host_env_file_path" do
-    assert_equal ".kamal/env/traefik/traefik.env", new_command.host_env_file_path
-  end
-
-  test "make_env_directory" do
-    assert_equal "mkdir -p .kamal/env/traefik", new_command.make_env_directory.join(" ")
-  end
-
-  test "remove_env_file" do
-    assert_equal "rm -f .kamal/env/traefik/traefik.env", new_command.remove_env_file.join(" ")
-  end
-
-  private
-    def new_command
-      Kamal::Commands::Traefik.new(Kamal::Configuration.new(@config, version: "123"))
-    end
-end

test/configuration/accessory_test.rb

@@ -20,7 +20,7 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
             },
             "secret" => [
               "MYSQL_ROOT_PASSWORD"
-            ],
+            ]
           },
           "files" => [
             "config/mysql/my.cnf:/etc/mysql/my.cnf",
@@ -49,6 +49,7 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
           }
         },
         "monitoring" => {
+          "service" => "custom-monitoring",
           "image" => "monitoring:latest",
           "roles" => [ "web" ],
           "port" => "4321:4321",
@@ -72,6 +73,7 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   test "service name" do
     assert_equal "app-mysql", @config.accessory(:mysql).service_name
     assert_equal "app-redis", @config.accessory(:redis).service_name
+    assert_equal "custom-monitoring", @config.accessory(:monitoring).service_name
   end
 
   test "port" do
@@ -80,9 +82,9 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   end
 
   test "host" do
-    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 [ "1.1.1.5" ], @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
   end
 
   test "missing host" do
@@ -106,39 +108,35 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
   end
 
   test "label args" do
-    assert_equal ["--label", "service=\"app-mysql\""], @config.accessory(:mysql).label_args
-    assert_equal ["--label", "service=\"app-redis\"", "--label", "cache=\"true\""], @config.accessory(:redis).label_args
+    assert_equal [ "--label", "service=\"app-mysql\"" ], @config.accessory(:mysql).label_args
+    assert_equal [ "--label", "service=\"app-redis\"", "--label", "cache=\"true\"" ], @config.accessory(:redis).label_args
   end
 
   test "env args" do
-    assert_equal ["--env-file", ".kamal/env/accessories/app-mysql.env"], @config.accessory(:mysql).env_args
-    assert_equal ["--env-file", ".kamal/env/accessories/app-redis.env"], @config.accessory(:redis).env_args
+    assert_equal [ "--env-file", ".kamal/env/accessories/app-mysql.env", "--env", "MYSQL_ROOT_HOST=\"%\"" ], @config.accessory(:mysql).env_args
+    assert_equal [ "--env-file", ".kamal/env/accessories/app-redis.env", "--env", "SOMETHING=\"else\"" ], @config.accessory(:redis).env_args
   end
 
-  test "env file with secret" do
+  test "env with secrets" do
     ENV["MYSQL_ROOT_PASSWORD"] = "secret123"
 
-    expected = <<~ENV
+    expected_secrets_file = <<~ENV
       MYSQL_ROOT_PASSWORD=secret123
-      MYSQL_ROOT_HOST=%
     ENV
 
-    assert_equal expected, @config.accessory(:mysql).env_file.to_s
+    assert_equal expected_secrets_file, @config.accessory(:mysql).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/accessories/app-mysql.env", "--env", "MYSQL_ROOT_HOST=\"%\"" ], @config.accessory(:mysql).env_args
   ensure
     ENV["MYSQL_ROOT_PASSWORD"] = nil
   end
 
-  test "host_env_directory" do
-    assert_equal ".kamal/env/accessories", @config.accessory(:mysql).host_env_directory
-  end
-
-  test "host_env_file_path" do
-    assert_equal ".kamal/env/accessories/app-mysql.env", @config.accessory(:mysql).host_env_file_path
+  test "env secrets path" do
+    assert_equal ".kamal/env/accessories/app-mysql.env", @config.accessory(:mysql).env.secrets_file
   end
 
   test "volume args" do
-    assert_equal ["--volume", "$PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf", "--volume", "$PWD/app-mysql/docker-entrypoint-initdb.d/structure.sql:/docker-entrypoint-initdb.d/structure.sql", "--volume", "$PWD/app-mysql/data:/var/lib/mysql"], @config.accessory(:mysql).volume_args
-    assert_equal ["--volume", "/var/lib/redis:/data"], @config.accessory(:redis).volume_args
+    assert_equal [ "--volume", "$PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf", "--volume", "$PWD/app-mysql/docker-entrypoint-initdb.d/structure.sql:/docker-entrypoint-initdb.d/structure.sql", "--volume", "$PWD/app-mysql/data:/var/lib/mysql" ], @config.accessory(:mysql).volume_args
+    assert_equal [ "--volume", "/var/lib/redis:/data" ], @config.accessory(:redis).volume_args
   end
 
   test "dynamic file expansion" do
@@ -149,11 +147,17 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     assert_match "%", @config.accessory(:mysql).files.keys[2].read
   end
 
-  test "directories" do
-    assert_equal({"$PWD/app-mysql/data"=>"/var/lib/mysql"}, @config.accessory(:mysql).directories)
+  test "directory with a relative path" do
+    @deploy[:accessories]["mysql"]["directories"] = [ "data:/var/lib/mysql" ]
+    assert_equal({ "$PWD/app-mysql/data"=>"/var/lib/mysql" }, @config.accessory(:mysql).directories)
+  end
+
+  test "directory with an absolute path" do
+    @deploy[:accessories]["mysql"]["directories"] = [ "/var/data/mysql:/var/lib/mysql" ]
+    assert_equal({ "/var/data/mysql"=>"/var/lib/mysql" }, @config.accessory(:mysql).directories)
   end
 
   test "options" do
-    assert_equal ["--cpus", "\"4\"", "--memory", "\"2GB\""], @config.accessory(:redis).option_args
+    assert_equal [ "--cpus", "\"4\"", "--memory", "\"2GB\"" ], @config.accessory(:redis).option_args
   end
 end

test/configuration/builder_test.rb

@@ -124,9 +124,9 @@ class ConfigurationBuilderTest < ActiveSupport::TestCase
   end
 
   test "setting secrets" do
-    @deploy_with_builder_option[:builder] = { "secrets" => ["GITHUB_TOKEN"] }
+    @deploy_with_builder_option[:builder] = { "secrets" => [ "GITHUB_TOKEN" ] }
 
-    assert_equal ["GITHUB_TOKEN"], @config_with_builder_option.builder.secrets
+    assert_equal [ "GITHUB_TOKEN" ], @config_with_builder_option.builder.secrets
   end
 
   test "dockerfile" do
@@ -140,7 +140,7 @@ class ConfigurationBuilderTest < ActiveSupport::TestCase
   end
 
   test "context" do
-    assert_equal ".", @config.builder.context
+    assert_equal "-", @config.builder.context
   end
 
   test "setting context" do
@@ -148,4 +148,14 @@ class ConfigurationBuilderTest < ActiveSupport::TestCase
 
     assert_equal "..", @config_with_builder_option.builder.context
   end
+
+  test "ssh" do
+    assert_nil @config.builder.ssh
+  end
+
+  test "setting ssh params" do
+    @deploy_with_builder_option[:builder] = { "ssh" => "default=$SSH_AUTH_SOCK" }
+
+    assert_equal "default=$SSH_AUTH_SOCK", @config_with_builder_option.builder.ssh
+  end
 end

test/configuration/env_test.rb

@@ -0,0 +1,74 @@
+require "test_helper"
+
+class ConfigurationEnvTest < ActiveSupport::TestCase
+  require "test_helper"
+
+  test "simple" do
+    assert_config \
+      config: { "foo" => "bar", "baz" => "haz" },
+      clear: { "foo" => "bar", "baz" => "haz" },
+      secrets: {}
+  end
+
+  test "clear" do
+    assert_config \
+      config: { "clear" => { "foo" => "bar", "baz" => "haz" } },
+      clear: { "foo" => "bar", "baz" => "haz" },
+      secrets: {}
+  end
+
+  test "secret" do
+    ENV["PASSWORD"] = "hello"
+    env = Kamal::Configuration::Env.from_config config: { "secret" => [ "PASSWORD" ] }
+
+    assert_config \
+      config: { "secret" => [ "PASSWORD" ] },
+      clear: {},
+      secrets: { "PASSWORD" => "hello" }
+  ensure
+    ENV.delete "PASSWORD"
+  end
+
+  test "missing secret" do
+    env = {
+      "secret" => [ "PASSWORD" ]
+    }
+
+    assert_raises(KeyError) { Kamal::Configuration::Env.from_config(config: { "secret" => [ "PASSWORD" ] }).secrets }
+  end
+
+  test "secret and clear" do
+    ENV["PASSWORD"] = "hello"
+    config = {
+      "secret" => [ "PASSWORD" ],
+      "clear" => {
+        "foo" => "bar",
+        "baz" => "haz"
+      }
+    }
+
+    assert_config \
+      config: config,
+      clear: { "foo" => "bar", "baz" => "haz" },
+      secrets: { "PASSWORD" => "hello" }
+  ensure
+    ENV.delete "PASSWORD"
+  end
+
+  test "stringIO conversion" do
+    env = {
+      "foo" => "bar",
+      "baz" => "haz"
+    }
+
+    assert_equal "foo=bar\nbaz=haz\n", \
+      StringIO.new(Kamal::EnvFile.new(env)).read
+  end
+
+  private
+    def assert_config(config:, clear:, secrets:)
+      env = Kamal::Configuration::Env.from_config config: config
+      assert_equal clear, env.clear
+      assert_equal secrets, env.secrets
+    end
+end

test/configuration/role_test.rb

@@ -38,11 +38,11 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
   end
 
   test "label args" do
-    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"workers\"" ], @config_with_roles.role(:workers).label_args
+    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"workers\"", "--label", "destination" ], @config_with_roles.role(:workers).label_args
   end
 
   test "special label args for web" do
-    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"web\"", "--label", "traefik.http.services.app-web.loadbalancer.server.scheme=\"http\"", "--label", "traefik.http.routers.app-web.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.routers.app-web.priority=\"2\"", "--label", "traefik.http.middlewares.app-web-retry.retry.attempts=\"5\"", "--label", "traefik.http.middlewares.app-web-retry.retry.initialinterval=\"500ms\"", "--label", "traefik.http.routers.app-web.middlewares=\"app-web-retry@docker\"" ], @config.role(:web).label_args
+    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"web\"", "--label", "destination" ], @config.role(:web).label_args
   end
 
   test "custom labels" do
@@ -56,28 +56,11 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
     assert_equal "70", @config_with_roles.role(:workers).labels["my.custom.label"]
   end
 
-  test "overwriting default traefik label" do
-    @deploy[:labels] = { "traefik.http.routers.app-web.rule" => "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"" }
-    assert_equal "\"Host(\\`example.com\\`) || (Host(\\`example.org\\`) && Path(\\`/traefik\\`))\"", @config.role(:web).labels["traefik.http.routers.app-web.rule"]
-  end
-
-  test "default traefik label on non-web role" do
-    config = Kamal::Configuration.new(@deploy_with_roles.tap { |c|
-      c[:servers]["beta"] = { "traefik" => "true", "hosts" => [ "1.1.1.5" ] }
-    })
-
-    assert_equal [ "--label", "service=\"app\"", "--label", "role=\"beta\"", "--label", "traefik.http.services.app-beta.loadbalancer.server.scheme=\"http\"", "--label", "traefik.http.routers.app-beta.rule=\"PathPrefix(\\`/\\`)\"", "--label", "traefik.http.routers.app-beta.priority=\"2\"", "--label", "traefik.http.middlewares.app-beta-retry.retry.attempts=\"5\"", "--label", "traefik.http.middlewares.app-beta-retry.retry.initialinterval=\"500ms\"", "--label", "traefik.http.routers.app-beta.middlewares=\"app-beta-retry@docker\"" ], config.role(:beta).label_args
-  end
-
   test "env overwritten by role" do
-    assert_equal "redis://a/b", @config_with_roles.role(:workers).env["REDIS_URL"]
+    assert_equal "redis://a/b", @config_with_roles.role(:workers).env.clear["REDIS_URL"]
 
-    expected_env = <<~ENV
-      REDIS_URL=redis://a/b
-      WEB_CONCURRENCY=4
-    ENV
-
-    assert_equal expected_env, @config_with_roles.role(:workers).env_file.to_s
+    assert_equal "\n", @config_with_roles.role(:workers).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
   end
 
   test "container name" do
@@ -90,7 +73,7 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
   end
 
   test "env args" do
-    assert_equal ["--env-file", ".kamal/env/roles/app-workers.env"], @config_with_roles.role(:workers).env_args
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
   end
 
   test "env secret overwritten by role" do
@@ -116,14 +99,13 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
     ENV["REDIS_PASSWORD"] = "secret456"
     ENV["DB_PASSWORD"] = "secret&\"123"
 
-    expected = <<~ENV
+    expected_secrets_file = <<~ENV
       REDIS_PASSWORD=secret456
       DB_PASSWORD=secret&\"123
-      REDIS_URL=redis://a/b
-      WEB_CONCURRENCY=4
     ENV
 
-    assert_equal expected, @config_with_roles.role(:workers).env_file.to_s
+    assert_equal expected_secrets_file, @config_with_roles.role(:workers).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
   ensure
     ENV["REDIS_PASSWORD"] = nil
     ENV["DB_PASSWORD"] = nil
@@ -142,13 +124,12 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
 
     ENV["DB_PASSWORD"] = "secret123"
 
-    expected = <<~ENV
+    expected_secrets_file = <<~ENV
       DB_PASSWORD=secret123
-      REDIS_URL=redis://a/b
-      WEB_CONCURRENCY=4
     ENV
 
-    assert_equal expected, @config_with_roles.role(:workers).env_file.to_s
+    assert_equal expected_secrets_file, @config_with_roles.role(:workers).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
   ensure
     ENV["DB_PASSWORD"] = nil
   end
@@ -165,43 +146,46 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
 
     ENV["REDIS_PASSWORD"] = "secret456"
 
-    expected = <<~ENV
+    expected_secrets_file = <<~ENV
       REDIS_PASSWORD=secret456
-      REDIS_URL=redis://a/b
-      WEB_CONCURRENCY=4
     ENV
 
-    assert_equal expected, @config_with_roles.role(:workers).env_file.to_s
+    assert_equal expected_secrets_file, @config_with_roles.role(:workers).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://a/b\"", "--env", "WEB_CONCURRENCY=\"4\"" ], @config_with_roles.role(:workers).env_args
   ensure
     ENV["REDIS_PASSWORD"] = nil
   end
 
-  test "host_env_directory" do
-    assert_equal ".kamal/env/roles", @config_with_roles.role(:workers).host_env_directory
+  test "env overwritten by role with secrets" do
+    @deploy_with_roles[:env] = {
+      "clear" => {
+        "REDIS_URL" => "redis://a/b"
+      },
+      "secret" => [
+        "REDIS_PASSWORD"
+      ]
+    }
+
+    @deploy_with_roles[:servers]["workers"]["env"] = {
+      "clear" => {
+        "REDIS_URL" => "redis://c/d"
+      }
+    }
+
+    ENV["REDIS_PASSWORD"] = "secret456"
+
+    expected_secrets_file = <<~ENV
+      REDIS_PASSWORD=secret456
+    ENV
+
+    assert_equal expected_secrets_file, @config_with_roles.role(:workers).env.secrets_io.string
+    assert_equal [ "--env-file", ".kamal/env/roles/app-workers.env", "--env", "REDIS_URL=\"redis://c/d\"" ], @config_with_roles.role(:workers).env_args
+  ensure
+    ENV["REDIS_PASSWORD"] = nil
   end
 
-  test "host_env_file_path" do
-    assert_equal ".kamal/env/roles/app-workers.env", @config_with_roles.role(:workers).host_env_file_path
-  end
-
-  test "uses cord" do
-    assert @config_with_roles.role(:web).uses_cord?
-    assert !@config_with_roles.role(:workers).uses_cord?
-  end
-
-  test "cord host file" do
-    assert_match %r{.kamal/cords/app-web-[0-9a-f]{32}/cord}, @config_with_roles.role(:web).cord_host_file
-  end
-
-  test "cord volume" do
-    assert_equal "/tmp/kamal-cord", @config_with_roles.role(:web).cord_volume.container_path
-    assert_match %r{.kamal/cords/app-web-[0-9a-f]{32}}, @config_with_roles.role(:web).cord_volume.host_path
-    assert_equal "--volume", @config_with_roles.role(:web).cord_volume.docker_args[0]
-    assert_match %r{\$\(pwd\)/.kamal/cords/app-web-[0-9a-f]{32}:/tmp/kamal-cord}, @config_with_roles.role(:web).cord_volume.docker_args[1]
-  end
-
-  test "cord container file" do
-    assert_equal "/tmp/kamal-cord/cord", @config_with_roles.role(:web).cord_container_file
+  test "env secrets_file" do
+    assert_equal ".kamal/env/roles/app-workers.env", @config_with_roles.role(:workers).env.secrets_file
   end
 
   test "asset path and volume args" do
@@ -210,28 +194,28 @@ class ConfigurationRoleTest < ActiveSupport::TestCase
     assert_nil @config_with_roles.role(:workers).asset_volume_args
     assert_nil @config_with_roles.role(:web).asset_path
     assert_nil @config_with_roles.role(:workers).asset_path
-    assert !@config_with_roles.role(:web).assets?
-    assert !@config_with_roles.role(:workers).assets?
+    assert_not @config_with_roles.role(:web).assets?
+    assert_not @config_with_roles.role(:workers).assets?
 
     config_with_assets = Kamal::Configuration.new(@deploy_with_roles.dup.tap { |c|
       c[:asset_path] = "foo"
     })
     assert_equal "foo", config_with_assets.role(:web).asset_path
     assert_equal "foo", config_with_assets.role(:workers).asset_path
-    assert_equal ["--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:foo"], config_with_assets.role(:web).asset_volume_args
+    assert_equal [ "--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:foo" ], config_with_assets.role(:web).asset_volume_args
     assert_nil config_with_assets.role(:workers).asset_volume_args
     assert config_with_assets.role(:web).assets?
-    assert !config_with_assets.role(:workers).assets?
+    assert_not config_with_assets.role(:workers).assets?
 
     config_with_assets = Kamal::Configuration.new(@deploy_with_roles.dup.tap { |c|
       c[:servers]["web"] = { "hosts" => [ "1.1.1.1", "1.1.1.2" ], "asset_path" => "bar" }
     })
     assert_equal "bar", config_with_assets.role(:web).asset_path
     assert_nil config_with_assets.role(:workers).asset_path
-    assert_equal ["--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:bar"], config_with_assets.role(:web).asset_volume_args
+    assert_equal [ "--volume", "$(pwd)/.kamal/assets/volumes/app-web-12345:bar" ], config_with_assets.role(:web).asset_volume_args
     assert_nil config_with_assets.role(:workers).asset_volume_args
     assert config_with_assets.role(:web).assets?
-    assert !config_with_assets.role(:workers).assets?
+    assert_not config_with_assets.role(:workers).assets?
 
   ensure
     ENV.delete("VERSION")

test/configuration/ssh_test.rb

@@ -7,7 +7,7 @@ class ConfigurationSshTest < ActiveSupport::TestCase
       registry: { "username" => "dhh", "password" => "secret" },
       env: { "REDIS_URL" => "redis://x/y" },
       servers: [ "1.1.1.1", "1.1.1.2" ],
-      volumes: ["/local/path:/container/path"]
+      volumes: [ "/local/path:/container/path" ]
     }
 
     @config = Kamal::Configuration.new(@deploy)
@@ -22,6 +22,9 @@ class ConfigurationSshTest < ActiveSupport::TestCase
 
     config = Kamal::Configuration.new(@deploy.tap { |c| c.merge!(ssh: { "log_level" => "debug" }) })
     assert_equal 0, config.ssh.options[:logger].level
+
+    config = Kamal::Configuration.new(@deploy.tap { |c| c.merge!(ssh: { "port" => 2222 }) })
+    assert_equal 2222, config.ssh.options[:port]
   end
 
   test "ssh options with proxy host" do

test/configuration/sshkit_test.rb

@@ -7,7 +7,7 @@ class ConfigurationSshkitTest < ActiveSupport::TestCase
       registry: { "username" => "dhh", "password" => "secret" },
       env: { "REDIS_URL" => "redis://x/y" },
       servers: [ "1.1.1.1", "1.1.1.2" ],
-      volumes: ["/local/path:/container/path"]
+      volumes: [ "/local/path:/container/path" ]
     }
 
     @config = Kamal::Configuration.new(@deploy)

test/configuration/volume_test.rb

@@ -3,11 +3,11 @@ require "test_helper"
 class ConfigurationVolumeTest < ActiveSupport::TestCase
   test "docker args absolute" do
     volume = Kamal::Configuration::Volume.new(host_path: "/root/foo/bar", container_path: "/assets")
-    assert_equal ["--volume", "/root/foo/bar:/assets"], volume.docker_args
+    assert_equal [ "--volume", "/root/foo/bar:/assets" ], volume.docker_args
   end
 
   test "docker args relative" do
     volume = Kamal::Configuration::Volume.new(host_path: "foo/bar", container_path: "/assets")
-    assert_equal ["--volume", "$(pwd)/foo/bar:/assets"], volume.docker_args
+    assert_equal [ "--volume", "$(pwd)/foo/bar:/assets" ], volume.docker_args
   end
 end

test/configuration_test.rb

@@ -10,7 +10,7 @@ class ConfigurationTest < ActiveSupport::TestCase
       registry: { "username" => "dhh", "password" => "secret" },
       env: { "REDIS_URL" => "redis://x/y" },
       servers: [ "1.1.1.1", "1.1.1.2" ],
-      volumes: ["/local/path:/container/path"]
+      volumes: [ "/local/path:/container/path" ]
     }
 
     @config = Kamal::Configuration.new(@deploy)
@@ -42,6 +42,16 @@ class ConfigurationTest < ActiveSupport::TestCase
     end
   end
 
+  test "service name valid" do
+    assert Kamal::Configuration.new(@deploy.tap { _1[:service] = "hey-app1_primary" }).valid?
+  end
+
+  test "service name invalid" do
+    assert_raise(ArgumentError) do
+      Kamal::Configuration.new @deploy.tap { _1[:service] = "app.com" }
+    end
+  end
+
   test "roles" do
     assert_equal %w[ web ], @config.roles.collect(&:name)
     assert_equal %w[ web workers ], @config_with_roles.roles.collect(&:name)
@@ -54,29 +64,29 @@ class ConfigurationTest < ActiveSupport::TestCase
   end
 
   test "all hosts" do
-    assert_equal [ "1.1.1.1", "1.1.1.2"], @config.all_hosts
+    assert_equal [ "1.1.1.1", "1.1.1.2" ], @config.all_hosts
     assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], @config_with_roles.all_hosts
   end
 
-  test "primary web host" do
-    assert_equal "1.1.1.1", @config.primary_web_host
-    assert_equal "1.1.1.1", @config_with_roles.primary_web_host
+  test "primary host" do
+    assert_equal "1.1.1.1", @config.primary_host
+    assert_equal "1.1.1.1", @config_with_roles.primary_host
   end
 
-  test "traefik hosts" do
-    assert_equal [ "1.1.1.1", "1.1.1.2" ], @config_with_roles.traefik_hosts
+  test "proxy hosts" do
+    assert_equal [ "1.1.1.1", "1.1.1.2" ], @config_with_roles.proxy_hosts
 
-    @deploy_with_roles[:servers]["workers"]["traefik"] = true
+    @deploy_with_roles[:servers]["workers"]["proxy"] = true
     config = Kamal::Configuration.new(@deploy_with_roles)
 
-    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], config.traefik_hosts
+    assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3" ], config.proxy_hosts
   end
 
   test "version no git repo" do
     ENV.delete("VERSION")
 
     Kamal::Git.expects(:used?).returns(nil)
-    error = assert_raises(RuntimeError) { @config.version}
+    error = assert_raises(RuntimeError) { @config.version }
     assert_match /no git repository found/, error.message
   end
 
@@ -93,7 +103,17 @@ class ConfigurationTest < ActiveSupport::TestCase
 
     Kamal::Git.expects(:revision).returns("git-version")
     Kamal::Git.expects(:uncommitted_changes).returns("M   file\n")
-    assert_match /^git-version_uncommitted_[0-9a-f]{16}$/, @config.version
+    assert_equal "git-version", @config.version
+  end
+
+  test "version from uncommitted context" do
+    ENV.delete("VERSION")
+
+    config = Kamal::Configuration.new(@deploy.tap { |c| c[:builder] = { "context" => "." } })
+
+    Kamal::Git.expects(:revision).returns("git-version")
+    Kamal::Git.expects(:uncommitted_changes).returns("M   file\n")
+    assert_match /^git-version_uncommitted_[0-9a-f]{16}$/, config.version
   end
 
   test "version from env" do
@@ -165,22 +185,32 @@ class ConfigurationTest < ActiveSupport::TestCase
     end
   end
 
+  test "allow_empty_roles" do
+    assert_silent do
+      Kamal::Configuration.new @deploy.merge(servers: { "web" => %w[ web ], "workers" => { "hosts" => %w[ ] } }, allow_empty_roles: true)
+    end
+
+    assert_raises(ArgumentError) do
+      Kamal::Configuration.new @deploy.merge(servers: { "web" => %w[], "workers" => { "hosts" => %w[] } }, allow_empty_roles: true)
+    end
+  end
+
   test "volume_args" do
-    assert_equal ["--volume", "/local/path:/container/path"], @config.volume_args
+    assert_equal [ "--volume", "/local/path:/container/path" ], @config.volume_args
   end
 
   test "logging args default" do
-    assert_equal ["--log-opt", "max-size=\"10m\""], @config.logging_args
+    assert_equal [ "--log-opt", "max-size=\"10m\"" ], @config.logging_args
   end
 
   test "logging args with configured options" do
     config = Kamal::Configuration.new(@deploy.tap { |c| c.merge!(logging: { "options" => { "max-size" => "100m", "max-file" => 5 } }) })
-    assert_equal ["--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\""], @config.logging_args
+    assert_equal [ "--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\"" ], @config.logging_args
   end
 
   test "logging args with configured driver and options" do
     config = Kamal::Configuration.new(@deploy.tap { |c| c.merge!(logging: { "driver" => "local", "options" => { "max-size" => "100m", "max-file" => 5 } }) })
-    assert_equal ["--log-driver", "\"local\"", "--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\""], @config.logging_args
+    assert_equal [ "--log-driver", "\"local\"", "--log-opt", "max-size=\"100m\"", "--log-opt", "max-file=\"5\"" ], @config.logging_args
   end
 
   test "erb evaluation of yml config" do
@@ -220,19 +250,19 @@ class ConfigurationTest < ActiveSupport::TestCase
 
   test "to_h" do
     expected_config = \
-      { :roles=>["web"],
-        :hosts=>["1.1.1.1", "1.1.1.2"],
-        :primary_host=>"1.1.1.1",
-        :version=>"missing",
-        :repository=>"dhh/app",
-        :absolute_image=>"dhh/app:missing",
-        :service_with_version=>"app-missing",
-        :ssh_options=>{ :user=>"root", log_level: :fatal, keepalive: true, keepalive_interval: 30 },
-        :sshkit=>{},
-        :volume_args=>["--volume", "/local/path:/container/path"],
-        :builder=>{},
-        :logging=>["--log-opt", "max-size=\"10m\""],
-        :healthcheck=>{ "path"=>"/up", "port"=>3000, "max_attempts" => 7, "exposed_port" => 3999, "cord" => "/tmp/kamal-cord", "log_lines" => 50 }}
+      { roles: [ "web" ],
+        hosts: [ "1.1.1.1", "1.1.1.2" ],
+        primary_host: "1.1.1.1",
+        version: "missing",
+        repository: "dhh/app",
+        absolute_image: "dhh/app:missing",
+        service_with_version: "app-missing",
+        ssh_options: { user: "root", port: 22, log_level: :fatal, keepalive: true, keepalive_interval: 30 },
+        sshkit: {},
+        volume_args: [ "--volume", "/local/path:/container/path" ],
+        builder: {},
+        logging: [ "--log-opt", "max-size=\"10m\"" ],
+        healthcheck: { "path"=>"/up", "port"=>3000, "max_attempts" => 7, "exposed_port" => 3999, "log_lines" => 50 } }
 
     assert_equal expected_config, @config.to_h
   end
@@ -278,4 +308,33 @@ class ConfigurationTest < ActiveSupport::TestCase
     assert_nil @config.asset_path
     assert_equal "foo", Kamal::Configuration.new(@deploy.merge!(asset_path: "foo")).asset_path
   end
+
+  test "primary role" do
+    assert_equal "web", @config.primary_role.name
+
+    config = Kamal::Configuration.new(@deploy_with_roles.deep_merge({
+      servers: { "alternate_web" => { "hosts" => [ "1.1.1.4", "1.1.1.5" ] } },
+      primary_role: "alternate_web" }))
+
+
+    assert_equal "alternate_web", config.primary_role.name
+    assert_equal "1.1.1.4", config.primary_host
+    assert config.role(:alternate_web).primary?
+    assert config.role(:alternate_web).running_proxy?
+  end
+
+  test "primary role missing" do
+    error = assert_raises(ArgumentError) do
+      Kamal::Configuration.new(@deploy.merge(primary_role: "bar"))
+    end
+    assert_match /bar isn't defined/, error.message
+  end
+
+  test "retain_containers" do
+    assert_equal 5, @config.retain_containers
+    config = Kamal::Configuration.new(@deploy_with_roles.merge(retain_containers: 2))
+    assert_equal 2, config.retain_containers
+
+    assert_raises(ArgumentError) { Kamal::Configuration.new(@deploy_with_roles.merge(retain_containers: 0)) }
+  end
 end

test/env_file_test.rb

@@ -1,7 +1,7 @@
 require "test_helper"
 
 class EnvFileTest < ActiveSupport::TestCase
-  test "env file simple" do
+  test "to_s" do
     env = {
       "foo" => "bar",
       "baz" => "haz"
@@ -11,80 +11,27 @@ class EnvFileTest < ActiveSupport::TestCase
       Kamal::EnvFile.new(env).to_s
   end
 
-  test "env file clear" do
-    env = {
-      "clear" => {
-        "foo" => "bar",
-        "baz" => "haz"
-      }
-    }
-
-    assert_equal "foo=bar\nbaz=haz\n", \
-      Kamal::EnvFile.new(env).to_s
-  end
-
-  test "env file empty" do
+  test "to_s empty" do
     assert_equal "\n", Kamal::EnvFile.new({}).to_s
   end
 
-  test "env file secret" do
-    ENV["PASSWORD"] = "hello"
+  test "to_s escaped newline" do
     env = {
-      "secret" => [ "PASSWORD" ]
+      "foo" => "hello\\nthere"
     }
 
-    assert_equal "PASSWORD=hello\n", \
+    assert_equal "foo=hello\\\\nthere\n", \
       Kamal::EnvFile.new(env).to_s
   ensure
     ENV.delete "PASSWORD"
   end
 
-  test "env file secret escaped newline" do
-    ENV["PASSWORD"] = "hello\\nthere"
+  test "to_s newline" do
     env = {
-      "secret" => [ "PASSWORD" ]
+      "foo" => "hello\nthere"
     }
 
-    assert_equal "PASSWORD=hello\\\\nthere\n", \
-      Kamal::EnvFile.new(env).to_s
-  ensure
-    ENV.delete "PASSWORD"
-  end
-
-  test "env file secret newline" do
-    ENV["PASSWORD"] = "hello\nthere"
-    env = {
-      "secret" => [ "PASSWORD" ]
-    }
-
-    assert_equal "PASSWORD=hello\\nthere\n", \
-      Kamal::EnvFile.new(env).to_s
-  ensure
-    ENV.delete "PASSWORD"
-  end
-
-  test "env file missing secret" do
-    env = {
-      "secret" => [ "PASSWORD" ]
-    }
-
-    assert_raises(KeyError) { Kamal::EnvFile.new(env).to_s }
-
-  ensure
-    ENV.delete "PASSWORD"
-  end
-
-  test "env file secret and clear" do
-    ENV["PASSWORD"] = "hello"
-    env = {
-      "secret" => [ "PASSWORD" ],
-      "clear" => {
-        "foo" => "bar",
-        "baz" => "haz"
-      }
-    }
-
-    assert_equal "PASSWORD=hello\nfoo=bar\nbaz=haz\n", \
+    assert_equal "foo=hello\\nthere\n", \
       Kamal::EnvFile.new(env).to_s
   ensure
     ENV.delete "PASSWORD"

test/fixtures/deploy_primary_web_role_override.yml

@@ -0,0 +1,20 @@
+service: app
+image: dhh/app
+servers:
+  web_chicago:
+    proxy: enabled
+    hosts:
+      - 1.1.1.1
+      - 1.1.1.2
+  web_tokyo:
+    proxy: enabled
+    hosts:
+      - 1.1.1.3
+      - 1.1.1.4
+env:
+  REDIS_URL: redis://x/y
+registry:
+  server: registry.digitalocean.com
+  username: user
+  password: pw
+primary_role: web_tokyo

test/fixtures/deploy_with_aliases.yml

@@ -0,0 +1,36 @@
+# helper aliases
+chicago_hosts: &chicago_hosts
+  hosts:
+    - 1.1.1.1
+    - 1.1.1.2
+tokyo_hosts: &tokyo_hosts
+  hosts:
+    - 1.1.1.3
+    - 1.1.1.4
+web_common: &web_common
+  env:
+    ROLE: "web"
+  proxy: true
+
+# actual config
+service: app
+image: dhh/app
+servers:
+  web:
+    <<: *chicago_hosts
+    <<: *web_common
+  web_tokyo:
+    <<: *tokyo_hosts
+    <<: *web_common
+  workers:
+    cmd: bin/jobs
+    <<: *chicago_hosts
+  workers_tokyo:
+    cmd: bin/jobs
+    <<: *tokyo_hosts
+env:
+  REDIS_URL: redis://x/y
+registry:
+  server: registry.digitalocean.com
+  username: user
+  password: pw

test/fixtures/deploy_with_low_percentage_boot_strategy.yml

@@ -0,0 +1,17 @@
+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:
+  username: user
+  password: pw
+
+boot:
+  limit: 1%
+  wait: 2

test/fixtures/deploy_with_percentage_boot_strategy.yml

@@ -13,5 +13,5 @@ registry:
   password: pw
 
 boot:
-  limit: 25%
+  limit: 1%
   wait: 2

test/fixtures/deploy_workers_only.yml

@@ -0,0 +1,12 @@
+service: app
+image: dhh/app
+servers:
+  workers:
+    proxy: false
+    hosts:
+      - 1.1.1.1
+      - 1.1.1.2
+primary_role: workers
+registry:
+  username: user
+  password: pw

test/integration/accessory_test.rb

@@ -1,6 +1,6 @@
 require_relative "integration_test"
 
-class AccessoryTest < IntegrationTest
+class IntegrationAccessoryTest < IntegrationTest
   test "boot, stop, start, restart, logs, remove" do
     kamal :envify
 
@@ -31,7 +31,7 @@ class AccessoryTest < IntegrationTest
     end
 
     def assert_accessory_not_running(name)
-      refute_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+      assert_no_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
     end
 
     def accessory_details(name)

test/integration/app_test.rb

@@ -1,16 +1,18 @@
 require_relative "integration_test"
 
-class AppTest < IntegrationTest
+class IntegrationAppTest < IntegrationTest
   test "stop, start, boot, logs, images, containers, exec, remove" do
     kamal :envify
 
+    kamal :setup
+
     kamal :deploy
 
     assert_app_is_up
 
     kamal :app, :stop
 
-    assert_app_is_down
+    assert_app_is_down response_code: "502"
 
     kamal :app, :start
 
@@ -50,6 +52,6 @@ class AppTest < IntegrationTest
 
     kamal :app, :remove
 
-    assert_app_is_down
+    assert_app_is_down response_code: "502"
   end
 end

test/integration/docker-compose.yml

@@ -50,8 +50,19 @@ services:
     volumes:
       - shared:/shared
 
+  vm3:
+    privileged: true
+    build:
+      context: docker/vm
+    volumes:
+      - shared:/shared
+
   load_balancer:
     build:
       context: docker/load_balancer
     ports:
       - "12345:80"
+    depends_on:
+      - vm1
+      - vm2
+      - vm3

test/integration/docker/deployer/Dockerfile

@@ -1,6 +1,6 @@
 FROM ruby:3.2
 
-WORKDIR /app
+WORKDIR /
 
 ENV VERBOSE=true
 
@@ -17,7 +17,8 @@ RUN echo \
 RUN apt-get update --fix-missing && apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
 
 COPY *.sh .
-COPY app/ .
+COPY app/ app/
+COPY app_with_roles/ app_with_roles/
 
 RUN rm -rf /root/.ssh
 RUN ln -s /shared/ssh /root/.ssh
@@ -25,7 +26,8 @@ RUN mkdir -p /etc/docker/certs.d/registry:4443 && ln -s /shared/certs/domain.crt
 
 RUN git config --global user.email "deployer@example.com"
 RUN git config --global user.name "Deployer"
-RUN git init && echo ".env" >> .gitignore && git add . && git commit -am "Initial version"
+RUN cd app && git init && echo ".env" >> .gitignore && git add . && git commit -am "Initial version"
+RUN cd app_with_roles && git init && echo ".env" >> .gitignore && git add . && git commit -am "Initial version"
 
 HEALTHCHECK --interval=1s CMD pgrep sleep