title: Google Container Engine: Accessing Cloud Storage
body: <p>I can't get the Application Default Credentials working in Google Container Engine. The docs say that they're intended for App Engine and Compute Engine, but I've been told that they should transparently pass through to a container running on Container Engine.</p>
  
  <p>Here's the code that's failing:</p>
  
  <pre><code>credentials = GoogleCredentials.get_application_default()
  service = discovery.build('storage', 'v1', credentials=credentials)
  </code></pre>
  
  <p>The error it's failing with: <code>AssertionError: No api proxy found for service "memcache"</code></p>
  
  <p>Is it correct to expect Application Default Credentials to work with Container Engine? If not, can anyone recommend the proper way to connect to cloud storage from a container running on Container Engine?</p>
  
  <p>Thanks.</p>
  
  <p><strong>EDIT:</strong> After running <code>gcloud beta auth application-default activate-service-account --key-file &lt;my_key&gt;.json</code> the <code>credentials</code> object in the above Python example is populated with data. However I'm still getting the same error.</p>