title: Google Cloud - Deploy as Container from GCR - Ports not exposed in docker container
body: <p>I have created a GCP VM instance, with option <code>Deploy as Container</code> pointing to an image in my private GCR(nginx customized).</p>
  
  <p>Also while creating the instance, I had given allow 'https' and 'http' traffic.</p>
  
  <p>Though the application is working fine, on connecting the instance via <code>ssh</code> and inspecting docker containers 
  (<code>docker ps</code>)
  I see the container ports are not exposed. Wondering how the http/https request are handled by the container here via the instance??  </p>