Merge branch 'main' into pr/99

* main:
  Ask for access token
  Style
  Style
  config.traefik is already nil safe
  Update README.md
  Bump dev deps and consolidate platform matches
  Deploys mention the released service@version
  Accessories aren't required to publish a port
  Accessories may be pulled from authenticated registries
  Polish destination config loading
  Allow arbitrary docker options for traefik
  Fixed typos
  Fixed readme
  Rebased on main
  Added volume configuration in response to issue coments
  Modified in response to PR comments
  Added the additional_ports configuration

lib/mrsk/configuration.rb

@@ -15,15 +15,16 @@ class Mrsk::Configuration
 
   class << self
     def create_from(base_config_file, destination: nil, version: "missing")
-      new(load_config_file(base_config_file).tap do |config|
-        if destination
-          config.deep_merge! \
-            load_config_file destination_config_file(base_config_file, destination)
-        end
-      end, destination: destination, version: version)
+      raw_config = load_config_files(base_config_file, *destination_config_file(base_config_file, destination))
+
+      new raw_config, destination: destination, version: version
     end
 
     private
+      def load_config_files(*files)
+        files.inject({}) { |config, file| config.deep_merge! load_config_file(file) }
+      end
+
       def load_config_file(file)
         if file.exist?
           YAML.load(ERB.new(IO.read(file)).result).symbolize_keys
@@ -33,8 +34,7 @@ class Mrsk::Configuration
       end
 
       def destination_config_file(base_config_file, destination)
-        dir, basename = base_config_file.split
-        dir.join basename.to_s.remove(".yml") + ".#{destination}.yml"
+        base_config_file.sub_ext(".#{destination}.yml") if destination
       end
   end
 
@@ -46,6 +46,11 @@ class Mrsk::Configuration
   end
 
 
+  def abbreviated_version
+    Mrsk::Utils.abbreviate_version(version)
+  end
+
+
   def roles
     @roles ||= role_names.collect { |role_name| Role.new(role_name, config: self) }
   end