administrator dashboard for observing the Docker container pool

config/locales/de.yml

@@ -123,11 +123,18 @@ de:
       models:
         exercise:
           at_most_one_main_file: dürfen höchstens eine Hauptdatei enthalten
+  admin:
+    dashboard:
+      show:
+        inactive: Der Container-Pool ist nicht aktiv.
+        quantity: Verfügbare Container
   application:
     not_authorized: Sie Sind nicht berechtigt, diese Aktion auszuführen.
   breadcrumbs:
     application:
       welcome: Startseite
+    dashboard:
+      show: Dashboard
     sessions:
       destroy_through_lti: Code-Abgabe
   consumers:

config/locales/en.yml

@@ -123,11 +123,18 @@ en:
       models:
         exercise:
           at_most_one_main_file: must include at most one main file
+  admin:
+    dashboard:
+      show:
+        inactive: Container pooling is not enabled.
+        quantity: Available Containers
   application:
     not_authorized: You are not authorized to perform this action.
   breadcrumbs:
     application:
       welcome: Cover Page
+    dashboard:
+      show: Dashboard
     sessions:
       destroy_through_lti: Code Submission
   consumers:

config/routes.rb

@@ -3,6 +3,10 @@ FILENAME_REGEXP = /[\w\.]+/ unless Kernel.const_defined?(:FILENAME_REGEXP)
 Rails.application.routes.draw do
   root to: 'application#welcome'
 
+  namespace :admin do
+    get 'dashboard', to: 'dashboard#show'
+  end
+
   get '/help', to: 'application#help'
 
   resources :consumers