Improve container repository tags controller route

config/routes/project.rb

@@ -221,14 +221,13 @@ constraints(ProjectUrlConstrainer.new) do
         end
       end
 
-      resources :container_registry,
-        controller: 'registry/repositories',
-        only: [:index, :destroy],
-        constraints: { id: Gitlab::Regex.container_registry_reference_regex }
+      resources :container_registry, only: [:index, :destroy],
+        controller: 'registry/repositories'
 
       namespace :registry do
         resources :repository, only: [] do
-          resources :tags, only: [:destroy]
+          resources :tags, only: [:destroy],
+            constraints: { id: Gitlab::Regex.container_registry_reference_regex }
         end
       end