Serve static swagger-ui assets via vendor/assets

spec/dummy/config/application.rb

@@ -24,6 +24,8 @@ module Dummy
     # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
+
+    config.assets.enabled = true
   end
 end