Add .env file for docker-compose

config/application.rb

@@ -15,5 +15,9 @@ module App
     # Application configuration can go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded after loading
     # the framework and any gems in your application.
+
+    def name
+      ENV["APP_NAME"]
+    end
   end
 end