Merge pull request #287 from Novtopro/traefik-inject-environment-variables

Allow to inject environment variables to traefik

lib/mrsk/commands/traefik.rb

@@ -1,5 +1,5 @@
 class Mrsk::Commands::Traefik < Mrsk::Commands::Base
-  delegate :argumentize, :optionize, to: Mrsk::Utils
+  delegate :argumentize, :argumentize_env_with_secrets, :optionize, to: Mrsk::Utils
 
   DEFAULT_IMAGE = "traefik:v2.9"
   CONTAINER_PORT = 80
@@ -10,6 +10,7 @@ class Mrsk::Commands::Traefik < Mrsk::Commands::Base
       "--restart", "unless-stopped",
       "--publish", port,
       "--volume", "/var/run/docker.sock:/var/run/docker.sock",
+      *env_args,
       *config.logging_args,
       *label_args,
       *docker_options_args,
@@ -61,6 +62,16 @@ class Mrsk::Commands::Traefik < Mrsk::Commands::Base
       argumentize "--label", labels
     end
 
+    def env_args
+      env_config = config.traefik["env"] || {}
+
+      if env_config.present?
+        argumentize_env_with_secrets(env_config)
+      else
+        []
+      end
+    end
+
     def labels
       config.traefik["labels"] || []
     end

test/commands/traefik_test.rb

@@ -8,6 +8,12 @@ class CommandsTraefikTest < ActiveSupport::TestCase
       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
@@ -65,6 +71,17 @@ class CommandsTraefikTest < ActiveSupport::TestCase
       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 --log-opt max-size=\"10m\" #{@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 -e EXAMPLE_API_KEY=\"456\" --log-opt max-size=\"10m\" #{@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)