diff --git a/lib/kamal/cli/accessory.rb b/lib/kamal/cli/accessory.rb
index 6c51c774..4de8832b 100644
--- a/lib/kamal/cli/accessory.rb
+++ b/lib/kamal/cli/accessory.rb
@@ -18,6 +18,11 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
             execute *accessory.ensure_env_directory
             upload! accessory.secrets_io, accessory.secrets_path, mode: "0600"
             execute *accessory.run
+
+            if accessory.running_proxy?
+              target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+              execute *accessory.deploy(target: target)
+            end
           end
         end
       end
@@ -75,6 +80,10 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         on(hosts) do
           execute *KAMAL.auditor.record("Started #{name} accessory"), verbosity: :debug
           execute *accessory.start
+          if accessory.running_proxy?
+            target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+            execute *accessory.deploy(target: target)
+          end
         end
       end
     end
@@ -87,6 +96,11 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
         on(hosts) do
           execute *KAMAL.auditor.record("Stopped #{name} accessory"), verbosity: :debug
           execute *accessory.stop, raise_on_non_zero_exit: false
+
+          if accessory.running_proxy?
+            target = capture_with_info(*accessory.container_id_for(container_name: accessory.service_name, only_running: true)).strip
+            execute *accessory.remove if target
+          end
         end
       end
     end
@@ -112,14 +126,15 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
     end
   end
 
-  desc "exec [NAME] [CMD]", "Execute a custom command on servers (use --help to show options)"
+  desc "exec [NAME] [CMD...]", "Execute a custom command on servers within the accessory container (use --help to show options)"
   option :interactive, aliases: "-i", type: :boolean, default: false, desc: "Execute command over ssh for an interactive shell (use for console/bash)"
   option :reuse, type: :boolean, default: false, desc: "Reuse currently running container instead of starting a new one"
-  def exec(name, cmd)
+  def exec(name, *cmd)
+    cmd = Kamal::Utils.join_commands(cmd)
     with_accessory(name) do |accessory, hosts|
       case
       when options[:interactive] && options[:reuse]
-        say "Launching interactive command with via SSH from existing container...", :magenta
+        say "Launching interactive command via SSH from existing container...", :magenta
         run_locally { exec accessory.execute_in_existing_container_over_ssh(cmd) }
 
       when options[:interactive]
@@ -128,16 +143,16 @@ class Kamal::Cli::Accessory < Kamal::Cli::Base
 
       when options[:reuse]
         say "Launching command from existing container...", :magenta
-        on(hosts) do
+        on(hosts) do |host|
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
-          capture_with_info(*accessory.execute_in_existing_container(cmd))
+          puts_by_host host, capture_with_info(*accessory.execute_in_existing_container(cmd))
         end
 
       else
         say "Launching command from new container...", :magenta
-        on(hosts) do
+        on(hosts) do |host|
           execute *KAMAL.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
-          capture_with_info(*accessory.execute_in_new_container(cmd))
+          puts_by_host host, capture_with_info(*accessory.execute_in_new_container(cmd))
         end
       end
     end
diff --git a/lib/kamal/cli/secrets.rb b/lib/kamal/cli/secrets.rb
index b094be46..0cfcf628 100644
--- a/lib/kamal/cli/secrets.rb
+++ b/lib/kamal/cli/secrets.rb
@@ -1,11 +1,17 @@
 class Kamal::Cli::Secrets < Kamal::Cli::Base
   desc "fetch [SECRETS...]", "Fetch secrets from a vault"
   option :adapter, type: :string, aliases: "-a", required: true, desc: "Which vault adapter to use"
-  option :account, type: :string, required: true, desc: "The account identifier or username"
+  option :account, type: :string, required: false, desc: "The account identifier or username"
   option :from, type: :string, required: false, desc: "A vault or folder to fetch the secrets from"
   option :inline, type: :boolean, required: false, hidden: true
   def fetch(*secrets)
-    results = adapter(options[:adapter]).fetch(secrets, **options.slice(:account, :from).symbolize_keys)
+    adapter = initialize_adapter(options[:adapter])
+
+    if adapter.requires_account? && options[:account].blank?
+      return puts "No value provided for required options '--account'"
+    end
+
+    results = adapter.fetch(secrets, **options.slice(:account, :from).symbolize_keys)
 
     return_or_puts JSON.dump(results).shellescape, inline: options[:inline]
   end
@@ -29,7 +35,7 @@ class Kamal::Cli::Secrets < Kamal::Cli::Base
   end
 
   private
-    def adapter(adapter)
+    def initialize_adapter(adapter)
       Kamal::Secrets::Adapters.lookup(adapter)
     end
 
diff --git a/lib/kamal/cli/templates/deploy.yml b/lib/kamal/cli/templates/deploy.yml
index fc44b6b9..89104ad3 100644
--- a/lib/kamal/cli/templates/deploy.yml
+++ b/lib/kamal/cli/templates/deploy.yml
@@ -16,8 +16,8 @@ servers:
 # Enable SSL auto certification via Let's Encrypt and allow for multiple apps on a single web server.
 # Remove this section when using multiple web servers and ensure you terminate SSL at your load balancer.
 #
-# Note: If using Cloudflare, set encryption mode in SSL/TLS setting to "Full" to enable CF-to-app encryption. 
-proxy: 
+# Note: If using Cloudflare, set encryption mode in SSL/TLS setting to "Full" to enable CF-to-app encryption.
+proxy:
   ssl: true
   host: app.example.com
   # Proxy connects to your container on port 80 by default.
@@ -36,6 +36,9 @@ registry:
 # Configure builder setup.
 builder:
   arch: amd64
+  # Pass in additional build args needed for your Dockerfile.
+  # args:
+  #   RUBY_VERSION: <%= File.read('.ruby-version').strip %>
 
 # Inject ENV variables into containers (secrets come from .kamal/secrets).
 #
diff --git a/lib/kamal/commands/accessory.rb b/lib/kamal/commands/accessory.rb
index 9abb6dfc..281b8713 100644
--- a/lib/kamal/commands/accessory.rb
+++ b/lib/kamal/commands/accessory.rb
@@ -1,9 +1,13 @@
 class Kamal::Commands::Accessory < Kamal::Commands::Base
+  include Proxy
+
   attr_reader :accessory_config
   delegate :service_name, :image, :hosts, :port, :files, :directories, :cmd,
            :network_args, :publish_args, :env_args, :volume_args, :label_args, :option_args,
-           :secrets_io, :secrets_path, :env_directory,
+           :secrets_io, :secrets_path, :env_directory, :proxy, :running_proxy?,
            to: :accessory_config
+  delegate :proxy_container_name, to: :config
+
 
   def initialize(config, name:)
     super(config)
diff --git a/lib/kamal/commands/accessory/proxy.rb b/lib/kamal/commands/accessory/proxy.rb
new file mode 100644
index 00000000..195a321b
--- /dev/null
+++ b/lib/kamal/commands/accessory/proxy.rb
@@ -0,0 +1,16 @@
+module Kamal::Commands::Accessory::Proxy
+  delegate :proxy_container_name, to: :config
+
+  def deploy(target:)
+    proxy_exec :deploy, service_name, *proxy.deploy_command_args(target: target)
+  end
+
+  def remove
+    proxy_exec :remove, service_name
+  end
+
+  private
+    def proxy_exec(*command)
+      docker :exec, proxy_container_name, "kamal-proxy", *command
+    end
+end
diff --git a/lib/kamal/commands/builder/base.rb b/lib/kamal/commands/builder/base.rb
index d551520b..dea04a3a 100644
--- a/lib/kamal/commands/builder/base.rb
+++ b/lib/kamal/commands/builder/base.rb
@@ -6,7 +6,7 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   delegate :argumentize, to: Kamal::Utils
   delegate \
     :args, :secrets, :dockerfile, :target, :arches, :local_arches, :remote_arches, :remote,
-    :cache_from, :cache_to, :ssh, :provenance, :driver, :docker_driver?,
+    :cache_from, :cache_to, :ssh, :provenance, :sbom, :driver, :docker_driver?,
     to: :builder_config
 
   def clean
@@ -37,7 +37,7 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
   end
 
   def build_options
-    [ *build_tags, *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile, *build_target, *build_ssh, *builder_provenance ]
+    [ *build_tags, *build_cache, *build_labels, *build_args, *build_secrets, *build_dockerfile, *build_target, *build_ssh, *builder_provenance, *builder_sbom ]
   end
 
   def build_context
@@ -101,6 +101,10 @@ class Kamal::Commands::Builder::Base < Kamal::Commands::Base
       argumentize "--provenance", provenance unless provenance.nil?
     end
 
+    def builder_sbom
+      argumentize "--sbom", sbom unless sbom.nil?
+    end
+
     def builder_config
       config.builder
     end
diff --git a/lib/kamal/configuration/accessory.rb b/lib/kamal/configuration/accessory.rb
index 3258c9d0..2728607d 100644
--- a/lib/kamal/configuration/accessory.rb
+++ b/lib/kamal/configuration/accessory.rb
@@ -5,7 +5,7 @@ class Kamal::Configuration::Accessory
 
   delegate :argumentize, :optionize, to: Kamal::Utils
 
-  attr_reader :name, :accessory_config, :env
+  attr_reader :name, :accessory_config, :env, :proxy
 
   def initialize(name, config:)
     @name, @config, @accessory_config = name.inquiry, config, config.raw_config["accessories"][name]
@@ -20,6 +20,8 @@ class Kamal::Configuration::Accessory
       config: accessory_config.fetch("env", {}),
       secrets: config.secrets,
       context: "accessories/#{name}/env"
+
+    initialize_proxy if running_proxy?
   end
 
   def service_name
@@ -106,6 +108,17 @@ class Kamal::Configuration::Accessory
     accessory_config["cmd"]
   end
 
+  def running_proxy?
+    @accessory_config["proxy"].present?
+  end
+
+  def initialize_proxy
+    @proxy = Kamal::Configuration::Proxy.new \
+      config: config,
+      proxy_config: accessory_config["proxy"],
+      context: "accessories/#{name}/proxy"
+  end
+
   private
     attr_accessor :config
 
@@ -176,7 +189,9 @@ class Kamal::Configuration::Accessory
 
     def hosts_from_roles
       if accessory_config.key?("roles")
-        accessory_config["roles"].flat_map { |role| config.role(role).hosts }
+        accessory_config["roles"].flat_map do |role|
+          config.role(role)&.hosts || raise(Kamal::ConfigurationError, "Unknown role in accessories config: '#{role}'")
+        end
       end
     end
 
diff --git a/lib/kamal/configuration/builder.rb b/lib/kamal/configuration/builder.rb
index 4c0dc603..970c47d1 100644
--- a/lib/kamal/configuration/builder.rb
+++ b/lib/kamal/configuration/builder.rb
@@ -115,6 +115,10 @@ class Kamal::Configuration::Builder
     builder_config["provenance"]
   end
 
+  def sbom
+    builder_config["sbom"]
+  end
+
   def git_clone?
     Kamal::Git.used? && builder_config["context"].nil?
   end
diff --git a/lib/kamal/configuration/docs/accessory.yml b/lib/kamal/configuration/docs/accessory.yml
index e77bf754..fab2989f 100644
--- a/lib/kamal/configuration/docs/accessory.yml
+++ b/lib/kamal/configuration/docs/accessory.yml
@@ -98,3 +98,7 @@ accessories:
     # Defaults to kamal:
     network: custom
 
+    # Proxy
+    #
+    proxy:
+      ...
\ No newline at end of file
diff --git a/lib/kamal/configuration/docs/builder.yml b/lib/kamal/configuration/docs/builder.yml
index b6e639f3..230b39ee 100644
--- a/lib/kamal/configuration/docs/builder.yml
+++ b/lib/kamal/configuration/docs/builder.yml
@@ -108,3 +108,9 @@ builder:
   # It is used to configure provenance attestations for the build result.
   # The value can also be a boolean to enable or disable provenance attestations.
   provenance: mode=max
+
+  # SBOM (Software Bill of Materials)
+  #
+  # It is used to configure SBOM generation for the build result.
+  # The value can also be a boolean to enable or disable SBOM generation.
+  sbom: true
diff --git a/lib/kamal/secrets/adapters/aws_secrets_manager.rb b/lib/kamal/secrets/adapters/aws_secrets_manager.rb
new file mode 100644
index 00000000..e23ea1f1
--- /dev/null
+++ b/lib/kamal/secrets/adapters/aws_secrets_manager.rb
@@ -0,0 +1,34 @@
+class Kamal::Secrets::Adapters::AwsSecretsManager < Kamal::Secrets::Adapters::Base
+  private
+    def login(_account)
+      nil
+    end
+
+    def fetch_secrets(secrets, account:, session:)
+      {}.tap do |results|
+        JSON.parse(get_from_secrets_manager(secrets, account: account))["SecretValues"].each do |secret|
+          secret_name = secret["Name"]
+          secret_string = JSON.parse(secret["SecretString"])
+
+          secret_string.each do |key, value|
+            results["#{secret_name}/#{key}"] = value
+          end
+        end
+      end
+    end
+
+    def get_from_secrets_manager(secrets, account:)
+      `aws secretsmanager batch-get-secret-value --secret-id-list #{secrets.map(&:shellescape).join(" ")} --profile #{account.shellescape}`.tap do
+        raise RuntimeError, "Could not read #{secret} from AWS Secrets Manager" unless $?.success?
+      end
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "AWS CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `aws --version 2> /dev/null`
+      $?.success?
+    end
+end
diff --git a/lib/kamal/secrets/adapters/base.rb b/lib/kamal/secrets/adapters/base.rb
index 579414af..fc66bb34 100644
--- a/lib/kamal/secrets/adapters/base.rb
+++ b/lib/kamal/secrets/adapters/base.rb
@@ -1,13 +1,20 @@
 class Kamal::Secrets::Adapters::Base
   delegate :optionize, to: Kamal::Utils
 
-  def fetch(secrets, account:, from: nil)
+  def fetch(secrets, account: nil, from: nil)
+    raise RuntimeError, "Missing required option '--account'" if requires_account? && account.blank?
+
     check_dependencies!
+
     session = login(account)
     full_secrets = secrets.map { |secret| [ from, secret ].compact.join("/") }
     fetch_secrets(full_secrets, account: account, session: session)
   end
 
+  def requires_account?
+    true
+  end
+
   private
     def login(...)
       raise NotImplementedError
diff --git a/lib/kamal/secrets/adapters/doppler.rb b/lib/kamal/secrets/adapters/doppler.rb
new file mode 100644
index 00000000..64d644f7
--- /dev/null
+++ b/lib/kamal/secrets/adapters/doppler.rb
@@ -0,0 +1,53 @@
+class Kamal::Secrets::Adapters::Doppler < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    def login(*)
+      unless loggedin?
+        `doppler login -y`
+        raise RuntimeError, "Failed to login to Doppler" unless $?.success?
+      end
+    end
+
+    def loggedin?
+      `doppler me --json 2> /dev/null`
+      $?.success?
+    end
+
+    def fetch_secrets(secrets, **)
+      project_and_config_flags = ""
+      unless service_token_set?
+        project, config, _ = secrets.first.split("/")
+
+        unless project && config
+          raise RuntimeError, "Missing project or config from '--from=project/config' option"
+        end
+
+        project_and_config_flags = "-p #{project.shellescape} -c #{config.shellescape}"
+      end
+
+      secret_names = secrets.collect { |s| s.split("/").last }
+
+      items = `doppler secrets get #{secret_names.map(&:shellescape).join(" ")} --json #{project_and_config_flags}`
+      raise RuntimeError, "Could not read #{secrets} from Doppler" unless $?.success?
+
+      items = JSON.parse(items)
+
+      items.transform_values { |value| value["computed"] }
+    end
+
+    def service_token_set?
+      ENV["DOPPLER_TOKEN"] && ENV["DOPPLER_TOKEN"][0, 5] == "dp.st"
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Doppler CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `doppler --version 2> /dev/null`
+      $?.success?
+    end
+end
diff --git a/lib/kamal/secrets/adapters/test_optional_account.rb b/lib/kamal/secrets/adapters/test_optional_account.rb
new file mode 100644
index 00000000..3a252e68
--- /dev/null
+++ b/lib/kamal/secrets/adapters/test_optional_account.rb
@@ -0,0 +1,5 @@
+class Kamal::Secrets::Adapters::TestOptionalAccount < Kamal::Secrets::Adapters::Test
+  def requires_account?
+    false
+  end
+end
diff --git a/test/cli/secrets_test.rb b/test/cli/secrets_test.rb
index 6014a7e7..bd412862 100644
--- a/test/cli/secrets_test.rb
+++ b/test/cli/secrets_test.rb
@@ -7,6 +7,18 @@ class CliSecretsTest < CliTestCase
       run_command("fetch", "foo", "bar", "baz", "--account", "myaccount", "--adapter", "test")
   end
 
+  test "fetch missing --acount" do
+    assert_equal \
+      "No value provided for required options '--account'",
+      run_command("fetch", "foo", "bar", "baz", "--adapter", "test")
+  end
+
+  test "fetch without required --account" do
+    assert_equal \
+      "\\{\\\"foo\\\":\\\"oof\\\",\\\"bar\\\":\\\"rab\\\",\\\"baz\\\":\\\"zab\\\"\\}",
+      run_command("fetch", "foo", "bar", "baz", "--adapter", "test_optional_account")
+  end
+
   test "extract" do
     assert_equal "oof", run_command("extract", "foo", "{\"foo\":\"oof\", \"bar\":\"rab\", \"baz\":\"zab\"}")
   end
diff --git a/test/commands/accessory_test.rb b/test/commands/accessory_test.rb
index 1befd9e6..b9bcca7e 100644
--- a/test/commands/accessory_test.rb
+++ b/test/commands/accessory_test.rb
@@ -39,7 +39,10 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
         "busybox" => {
           "service" => "custom-busybox",
           "image" => "busybox:latest",
-          "host" => "1.1.1.7"
+          "host" => "1.1.1.7",
+          "proxy" => {
+            "host" => "busybox.example.com"
+          }
         }
       }
     }
@@ -166,6 +169,18 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
       new_command(:mysql).remove_image.join(" ")
   end
 
+  test "deploy" do
+    assert_equal \
+      "docker exec kamal-proxy kamal-proxy deploy custom-busybox --target=\"172.1.0.2:80\" --host=\"busybox.example.com\" --deploy-timeout=\"30s\" --drain-timeout=\"30s\" --buffer-requests --buffer-responses --log-request-header=\"Cache-Control\" --log-request-header=\"Last-Modified\" --log-request-header=\"User-Agent\"",
+      new_command(:busybox).deploy(target: "172.1.0.2").join(" ")
+  end
+
+  test "remove" do
+    assert_equal \
+      "docker exec kamal-proxy kamal-proxy remove custom-busybox",
+      new_command(:busybox).remove.join(" ")
+  end
+
   private
     def new_command(accessory)
       Kamal::Commands::Accessory.new(Kamal::Configuration.new(@config), name: accessory)
diff --git a/test/commands/builder_test.rb b/test/commands/builder_test.rb
index 86b2f573..85703f54 100644
--- a/test/commands/builder_test.rb
+++ b/test/commands/builder_test.rb
@@ -158,6 +158,20 @@ class CommandsBuilderTest < ActiveSupport::TestCase
       builder.push.join(" ")
   end
 
+  test "push with sbom" do
+    builder = new_builder_command(builder: { "sbom" => true })
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom true .",
+      builder.push.join(" ")
+  end
+
+  test "push with sbom false" do
+    builder = new_builder_command(builder: { "sbom" => false })
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64 --builder kamal-local-docker-container -t dhh/app:123 -t dhh/app:latest --label service=\"app\" --file Dockerfile --sbom false .",
+      builder.push.join(" ")
+  end
+
   test "mirror count" do
     command = new_builder_command
     assert_equal "docker info --format '{{index .RegistryConfig.Mirrors 0}}'", command.first_mirror.join(" ")
diff --git a/test/configuration/accessory_test.rb b/test/configuration/accessory_test.rb
index f5220902..d15a48ad 100644
--- a/test/configuration/accessory_test.rb
+++ b/test/configuration/accessory_test.rb
@@ -63,6 +63,9 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
           "options" => {
             "cpus" => "4",
             "memory" => "2GB"
+          },
+          "proxy" => {
+            "host" => "monitoring.example.com"
           }
         }
       }
@@ -161,4 +164,9 @@ class ConfigurationAccessoryTest < ActiveSupport::TestCase
     @deploy[:accessories]["mysql"]["network"] = "database"
     assert_equal [ "--network", "database" ], @config.accessory(:mysql).network_args
   end
+
+  test "proxy" do
+    assert @config.accessory(:monitoring).running_proxy?
+    assert_equal [ "monitoring.example.com" ], @config.accessory(:monitoring).proxy.hosts
+  end
 end
diff --git a/test/configuration/builder_test.rb b/test/configuration/builder_test.rb
index 5fef465a..12387800 100644
--- a/test/configuration/builder_test.rb
+++ b/test/configuration/builder_test.rb
@@ -144,6 +144,16 @@ class ConfigurationBuilderTest < ActiveSupport::TestCase
     assert_equal "mode=max", config.builder.provenance
   end
 
+  test "sbom" do
+    assert_nil config.builder.sbom
+  end
+
+  test "setting sbom" do
+    @deploy[:builder]["sbom"] = true
+
+    assert_equal true, config.builder.sbom
+  end
+
   test "local disabled but no remote set" do
     @deploy[:builder]["local"] = false
 
diff --git a/test/integration/docker/deployer/Dockerfile b/test/integration/docker/deployer/Dockerfile
index c7132861..c25747a2 100644
--- a/test/integration/docker/deployer/Dockerfile
+++ b/test/integration/docker/deployer/Dockerfile
@@ -20,6 +20,7 @@ COPY *.sh .
 COPY app/ app/
 COPY app_with_roles/ app_with_roles/
 COPY app_with_traefik/ app_with_traefik/
+COPY app_with_proxied_accessory/ app_with_proxied_accessory/
 
 RUN rm -rf /root/.ssh
 RUN ln -s /shared/ssh /root/.ssh
@@ -30,6 +31,7 @@ RUN git config --global user.name "Deployer"
 RUN cd app && git init && git add . && git commit -am "Initial version"
 RUN cd app_with_roles && git init && git add . && git commit -am "Initial version"
 RUN cd app_with_traefik && git init && git add . && git commit -am "Initial version"
+RUN cd app_with_proxied_accessory && git init && git add . && git commit -am "Initial version"
 
 HEALTHCHECK --interval=1s CMD pgrep sleep
 
diff --git a/test/integration/docker/deployer/app_with_proxied_accessory/Dockerfile b/test/integration/docker/deployer/app_with_proxied_accessory/Dockerfile
new file mode 100644
index 00000000..0e6237df
--- /dev/null
+++ b/test/integration/docker/deployer/app_with_proxied_accessory/Dockerfile
@@ -0,0 +1,9 @@
+FROM registry:4443/nginx:1-alpine-slim
+
+COPY default.conf /etc/nginx/conf.d/default.conf
+
+ARG COMMIT_SHA
+RUN echo $COMMIT_SHA > /usr/share/nginx/html/version
+RUN mkdir -p /usr/share/nginx/html/versions && echo "version" > /usr/share/nginx/html/versions/$COMMIT_SHA
+RUN mkdir -p /usr/share/nginx/html/versions && echo "hidden" > /usr/share/nginx/html/versions/.hidden
+RUN echo "Up!" > /usr/share/nginx/html/up
diff --git a/test/integration/docker/deployer/app_with_proxied_accessory/config/deploy.yml b/test/integration/docker/deployer/app_with_proxied_accessory/config/deploy.yml
new file mode 100644
index 00000000..bdb547ae
--- /dev/null
+++ b/test/integration/docker/deployer/app_with_proxied_accessory/config/deploy.yml
@@ -0,0 +1,44 @@
+service: app_with_proxied_accessory
+image: app_with_proxied_accessory
+servers:
+  - vm1
+env:
+  clear:
+    CLEAR_TOKEN: 4321
+    CLEAR_TAG: ""
+    HOST_TOKEN: "${HOST_TOKEN}"
+asset_path: /usr/share/nginx/html/versions
+proxy:
+  host: 127.0.0.1
+registry:
+  server: registry:4443
+  username: root
+  password: root
+builder:
+  driver: docker
+  arch: <%= Kamal::Utils.docker_arch %>
+  args:
+    COMMIT_SHA: <%= `git rev-parse HEAD` %>
+accessories:
+  busybox:
+    service: custom-busybox
+    image: registry:4443/busybox:1.36.0
+    cmd: sh -c 'echo "Starting busybox..."; trap exit term; while true; do sleep 1; done'
+    roles:
+      - web
+  netcat:
+    service: netcat
+    image: registry:4443/busybox:1.36.0
+    cmd: >
+      sh -c 'echo "Starting netcat..."; while true; do echo -e "HTTP/1.1 200 OK\r\nContent-Length: 11\r\n\r\nHello Ruby" | nc -l -p 80; done'
+    roles:
+      - web
+    port: 12345:80
+    proxy:
+      host: netcat
+      ssl: false
+      healthcheck:
+        interval: 1
+        timeout: 1
+        path: "/"
+
diff --git a/test/integration/docker/deployer/app_with_proxied_accessory/default.conf b/test/integration/docker/deployer/app_with_proxied_accessory/default.conf
new file mode 100644
index 00000000..e37a9bc1
--- /dev/null
+++ b/test/integration/docker/deployer/app_with_proxied_accessory/default.conf
@@ -0,0 +1,17 @@
+server {
+    listen       80;
+    listen  [::]:80;
+    server_name  localhost;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+    }
+
+    # redirect server error pages to the static page /50x.html
+    #
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+}
diff --git a/test/integration/proxied_accessory_test.rb b/test/integration/proxied_accessory_test.rb
new file mode 100644
index 00000000..10f3cff8
--- /dev/null
+++ b/test/integration/proxied_accessory_test.rb
@@ -0,0 +1,63 @@
+require_relative "integration_test"
+
+class ProxiedAccessoryTest < IntegrationTest
+  test "boot, stop, start, restart, logs, remove" do
+    @app = "app_with_proxied_accessory"
+
+    kamal :deploy
+
+    kamal :accessory, :boot, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :stop, :netcat
+    assert_accessory_not_running :netcat
+    assert_netcat_not_found
+
+    kamal :accessory, :start, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :restart, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :remove, :netcat, "-y"
+    assert_accessory_not_running :netcat
+    assert_netcat_not_found
+  end
+
+  private
+    def assert_accessory_running(name)
+      assert_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+    end
+
+    def assert_accessory_not_running(name)
+      assert_no_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+    end
+
+    def accessory_details(name)
+      kamal :accessory, :details, name, capture: true
+    end
+
+    def assert_netcat_is_up
+      response = netcat_response
+      debug_response_code(response, "200")
+      assert_equal "200", response.code
+    end
+
+    def assert_netcat_not_found
+      response = netcat_response
+      debug_response_code(response, "404")
+      assert_equal "404", response.code
+    end
+
+    def netcat_response
+      uri = URI.parse("http://127.0.0.1:12345/up")
+      http = Net::HTTP.new(uri.host, uri.port)
+      request = Net::HTTP::Get.new(uri)
+      request["Host"] = "netcat"
+
+      http.request(request)
+    end
+end
diff --git a/test/secrets/aws_secrets_manager_adapter_test.rb b/test/secrets/aws_secrets_manager_adapter_test.rb
new file mode 100644
index 00000000..42a0f48a
--- /dev/null
+++ b/test/secrets/aws_secrets_manager_adapter_test.rb
@@ -0,0 +1,98 @@
+require "test_helper"
+
+class AwsSecretsManagerAdapterTest < SecretAdapterTestCase
+  test "fetch" do
+    stub_ticks.with("aws --version 2> /dev/null")
+    stub_ticks
+      .with("aws secretsmanager batch-get-secret-value --secret-id-list secret/KEY1 secret/KEY2 secret2/KEY3 --profile default")
+      .returns(<<~JSON)
+        {
+          "SecretValues": [
+            {
+              "ARN": "arn:aws:secretsmanager:us-east-1:aaaaaaaaaaaa:secret:secret",
+              "Name": "secret",
+              "VersionId": "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv",
+              "SecretString": "{\\"KEY1\\":\\"VALUE1\\", \\"KEY2\\":\\"VALUE2\\"}",
+              "VersionStages": [
+                  "AWSCURRENT"
+              ],
+              "CreatedDate": "2024-01-01T00:00:00.000000"
+            },
+            {
+              "ARN": "arn:aws:secretsmanager:us-east-1:aaaaaaaaaaaa:secret:secret2",
+              "Name": "secret2",
+              "VersionId": "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv",
+              "SecretString": "{\\"KEY3\\":\\"VALUE3\\"}",
+              "VersionStages": [
+                  "AWSCURRENT"
+              ],
+              "CreatedDate": "2024-01-01T00:00:00.000000"
+            }
+          ],
+          "Errors": []
+        }
+      JSON
+
+    json = JSON.parse(shellunescape(run_command("fetch", "secret/KEY1", "secret/KEY2", "secret2/KEY3")))
+
+    expected_json = {
+      "secret/KEY1"=>"VALUE1",
+      "secret/KEY2"=>"VALUE2",
+      "secret2/KEY3"=>"VALUE3"
+    }
+
+    assert_equal expected_json, json
+  end
+
+  test "fetch with secret names" do
+    stub_ticks.with("aws --version 2> /dev/null")
+    stub_ticks
+      .with("aws secretsmanager batch-get-secret-value --secret-id-list secret/KEY1 secret/KEY2 --profile default")
+      .returns(<<~JSON)
+        {
+          "SecretValues": [
+            {
+              "ARN": "arn:aws:secretsmanager:us-east-1:aaaaaaaaaaaa:secret:secret",
+              "Name": "secret",
+              "VersionId": "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv",
+              "SecretString": "{\\"KEY1\\":\\"VALUE1\\", \\"KEY2\\":\\"VALUE2\\"}",
+              "VersionStages": [
+                  "AWSCURRENT"
+              ],
+              "CreatedDate": "2024-01-01T00:00:00.000000"
+            }
+          ],
+          "Errors": []
+        }
+      JSON
+
+    json = JSON.parse(shellunescape(run_command("fetch", "--from", "secret", "KEY1", "KEY2")))
+
+    expected_json = {
+      "secret/KEY1"=>"VALUE1",
+      "secret/KEY2"=>"VALUE2"
+    }
+
+    assert_equal expected_json, json
+  end
+
+  test "fetch without CLI installed" do
+    stub_ticks_with("aws --version 2> /dev/null", succeed: false)
+
+    error = assert_raises RuntimeError do
+      JSON.parse(shellunescape(run_command("fetch", "SECRET1")))
+    end
+    assert_equal "AWS CLI is not installed", error.message
+  end
+
+  private
+    def run_command(*command)
+      stdouted do
+        Kamal::Cli::Secrets.start \
+          [ *command,
+            "-c", "test/fixtures/deploy_with_accessories.yml",
+            "--adapter", "aws_secrets_manager",
+            "--account", "default" ]
+      end
+    end
+end
diff --git a/test/secrets/doppler_adapter_test.rb b/test/secrets/doppler_adapter_test.rb
new file mode 100644
index 00000000..c2b16468
--- /dev/null
+++ b/test/secrets/doppler_adapter_test.rb
@@ -0,0 +1,186 @@
+require "test_helper"
+
+class DopplerAdapterTest < SecretAdapterTestCase
+  setup do
+    `true` # Ensure $? is 0
+  end
+
+  test "fetch" do
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: true)
+    stub_ticks.with("doppler me --json 2> /dev/null")
+
+    stub_ticks
+      .with("doppler secrets get SECRET1 FSECRET1 FSECRET2 --json -p my-project -c prd")
+      .returns(<<~JSON)
+        {
+          "SECRET1": {
+            "computed":"secret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET1": {
+            "computed":"fsecret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET2": {
+            "computed":"fsecret2",
+            "computedVisibility":"unmasked",
+            "note":""
+          }
+        }
+      JSON
+
+    json = JSON.parse(
+      shellunescape run_command("fetch", "--from", "my-project/prd", "SECRET1", "FSECRET1", "FSECRET2")
+    )
+
+    expected_json = {
+      "SECRET1"=>"secret1",
+      "FSECRET1"=>"fsecret1",
+      "FSECRET2"=>"fsecret2"
+    }
+
+    assert_equal expected_json, json
+  end
+
+  test "fetch having DOPPLER_TOKEN" do
+    ENV["DOPPLER_TOKEN"] = "dp.st.xxxxxxxxxxxxxxxxxxxxxx"
+
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: true)
+    stub_ticks.with("doppler me --json 2> /dev/null")
+
+    stub_ticks
+      .with("doppler secrets get SECRET1 FSECRET1 FSECRET2 --json ")
+      .returns(<<~JSON)
+        {
+          "SECRET1": {
+            "computed":"secret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET1": {
+            "computed":"fsecret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET2": {
+            "computed":"fsecret2",
+            "computedVisibility":"unmasked",
+            "note":""
+          }
+        }
+      JSON
+
+    json = JSON.parse(
+      shellunescape run_command("fetch", "SECRET1", "FSECRET1", "FSECRET2")
+    )
+
+    expected_json = {
+      "SECRET1"=>"secret1",
+      "FSECRET1"=>"fsecret1",
+      "FSECRET2"=>"fsecret2"
+    }
+
+    assert_equal expected_json, json
+
+     ENV.delete("DOPPLER_TOKEN")
+  end
+
+  test "fetch with folder in secret" do
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: true)
+    stub_ticks.with("doppler me --json 2> /dev/null")
+
+    stub_ticks
+      .with("doppler secrets get SECRET1 FSECRET1 FSECRET2 --json -p my-project -c prd")
+      .returns(<<~JSON)
+        {
+          "SECRET1": {
+            "computed":"secret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET1": {
+            "computed":"fsecret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          },
+          "FSECRET2": {
+            "computed":"fsecret2",
+            "computedVisibility":"unmasked",
+            "note":""
+          }
+        }
+      JSON
+
+    json = JSON.parse(
+      shellunescape run_command("fetch", "my-project/prd/SECRET1", "my-project/prd/FSECRET1", "my-project/prd/FSECRET2")
+    )
+
+    expected_json = {
+      "SECRET1"=>"secret1",
+      "FSECRET1"=>"fsecret1",
+      "FSECRET2"=>"fsecret2"
+    }
+
+    assert_equal expected_json, json
+  end
+
+  test "fetch without --from" do
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: true)
+    stub_ticks.with("doppler me --json 2> /dev/null")
+
+    error = assert_raises RuntimeError do
+      run_command("fetch", "FSECRET1", "FSECRET2")
+    end
+
+    assert_equal "Missing project or config from '--from=project/config' option", error.message
+  end
+
+  test "fetch with signin" do
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: true)
+    stub_ticks_with("doppler me --json 2> /dev/null", succeed: false)
+    stub_ticks_with("doppler login -y", succeed: true).returns("")
+    stub_ticks.with("doppler secrets get SECRET1 --json -p my-project -c prd").returns(single_item_json)
+
+    json = JSON.parse(shellunescape(run_command("fetch", "--from", "my-project/prd", "SECRET1")))
+
+    expected_json = {
+      "SECRET1"=>"secret1"
+    }
+
+    assert_equal expected_json, json
+  end
+
+  test "fetch without CLI installed" do
+    stub_ticks_with("doppler --version 2> /dev/null", succeed: false)
+
+    error = assert_raises RuntimeError do
+      JSON.parse(shellunescape(run_command("fetch", "HOST", "PORT")))
+    end
+
+    assert_equal "Doppler CLI is not installed", error.message
+  end
+
+  private
+    def run_command(*command)
+      stdouted do
+        Kamal::Cli::Secrets.start \
+          [ *command,
+            "-c", "test/fixtures/deploy_with_accessories.yml",
+            "--adapter", "doppler" ]
+      end
+    end
+
+    def single_item_json
+      <<~JSON
+        {
+          "SECRET1": {
+            "computed":"secret1",
+            "computedVisibility":"unmasked",
+            "note":""
+          }
+        }
+      JSON
+    end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 1749ee32..f5811872 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -2,6 +2,7 @@ require "bundler/setup"
 require "active_support/test_case"
 require "active_support/testing/autorun"
 require "active_support/testing/stream"
+require "rails/test_unit/line_filtering"
 require "debug"
 require "mocha/minitest" # using #stubs that can alter returns
 require "minitest/autorun" # using #stub that take args
@@ -32,6 +33,7 @@ end
 
 class ActiveSupport::TestCase
   include ActiveSupport::Testing::Stream
+  extend Rails::LineFiltering
 
   private
     def stdouted