Extract xargs helper

lib/mrsk/commands/app.rb

@@ -28,7 +28,7 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   end
 
   def stop
-    pipe current_container_id, "xargs docker stop"
+    pipe current_container_id, xargs(docker(:stop))
   end
 
   def info
@@ -83,7 +83,7 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   def remove_container(version:)
     pipe \
       container_id_for(container_name: service_with_version(version)),
-      [ "xargs", docker(:container, :rm) ].flatten
+      xargs(docker(:container, :rm))
   end
 
   def remove_containers

lib/mrsk/commands/base.rb

@@ -28,6 +28,10 @@ module Mrsk::Commands
         combine *commands, by: "|"
       end
 
+      def xargs(command)
+        [ :xargs, command ].flatten
+      end
+
       def docker(*args)
         args.compact.unshift :docker
       end