Added the additional_ports configuration

ISSUE: basecamp#98

README.md

@@ -426,6 +426,42 @@ traefik:
   host_port: 8080
 ```
 
+### Additional entrypoints for traefik
+
+You can configure additional ports and entrypoints for traefik list so:
+
+```yaml
+traefik:
+  additional_ports: 
+    - 9000
+    - 9001
+  args:
+    entrypoints.myentrypoint.address: ":9000"
+    entrypoints.otherentrypoint.address: ":9001"
+```
+
+Be aware, a lot of the out-of-the-box magic of mrsk is provided by traefik defaults so going down this path requires more manual configuration, like so:
+
+A more complete example including entrypoints would be:
+
+```yaml
+service: myservice
+
+labels:
+  traefik.tcp.routers.other.rule: 'HostSNI(`*`)'
+  traefik.tcp.routers.other.entrypoints: otherentrypoint
+  traefik.tcp.services.other.loadbalancer.server.port: 9000
+  traefik.http.routers.myservice.entrypoints: web
+  traefik.http.services.myservice.loadbalancer.server.port: 8080
+
+traefik:
+  additional_ports:
+    - 9000
+  args:
+    'entrypoints.web.address=:80': true
+    'entrypoints.otherentrypoint.address=:9000': true
+```
+
 ### Configuring build args for new images
 
 Build arguments that aren't secret can also be configured:

lib/mrsk/commands/traefik.rb

@@ -9,6 +9,7 @@ def run
       "--restart", "unless-stopped",
       "--log-opt", "max-size=#{MAX_LOG_SIZE}",
       "--publish", port,
+      *additional_ports,
       "--volume", "/var/run/docker.sock:/var/run/docker.sock",
       "traefik",
       "--providers.docker",
@@ -54,6 +55,14 @@ def port
   end
 
   private
+    def additional_ports
+      if args = config.raw_config.dig(:traefik, "additional_ports")
+        args.collect { |value| "--publish #{value}:#{value}" }.compact
+      else
+        []
+      end
+    end
+
     def cmd_option_args
       if args = config.traefik["args"]
         optionize args, with: "="

test/commands/traefik_test.rb

@@ -19,6 +19,17 @@ class CommandsTraefikTest < ActiveSupport::TestCase
       new_command.run.join(" ")
   end
 
+  test "run with additional entrypoints" do
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --log-opt max-size=10m --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock traefik --providers.docker --log.level=DEBUG --accesslog.format \"json\" --metrics.prometheus.buckets \"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["additional_ports"] = %w[9000 9001]
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --log-opt max-size=10m --publish 80:80 --publish 9000:9000 --publish 9001:9001 --volume /var/run/docker.sock:/var/run/docker.sock traefik --providers.docker --log.level=DEBUG --accesslog.format \"json\" --metrics.prometheus.buckets \"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
   test "run without configuration" do
     @config.delete(:traefik)