title: Gcloud Instances have no Docker Hub RateLimit
body: <p>Recently Docker introduced rate limit for the Docker Hub: <a href="https://docs.docker.com/docker-hub/download-rate-limit" rel="nofollow noreferrer">https://docs.docker.com/docker-hub/download-rate-limit</a></p>
  <p>On my local machine and DigitalOcean I can see these in action when running:</p>
  <pre><code>TOKEN=$(curl &quot;https://auth.docker.io/token?service=registry.docker.io&amp;scope=repository:ratelimitpreview/test:pull&quot; | jq -r .token)
  
  curl --head -H &quot;Authorization: Bearer $TOKEN&quot; https://registry-1.docker.io/v2/ratelimitpreview/test/manifests/latest 2&gt;&amp;1 | grep RateLimit
  </code></pre>
  <p>I see for example:</p>
  <pre><code>RateLimit-Limit: 500;w=21600
  RateLimit-Remaining: 491;w=21600
  </code></pre>
  <p>But this isn't the case when running this on a fresh GCP Gcloud instance. There the headers for RateLimit are not returned. Any idea why this could be?</p>