title: What work does the process in container "gcr.io/google_containers/pause:0.8.0" do?
body: <p>I have known clearly about the usage of the docker option <code>--net=container:NAME_or_ID</code>, I also have read the source code of kubernetes about how to configure the container to use the network of <code>InfraContainer</code>, so I think the only work the process in container <code>gcr.io/google_containers/pause:0.8.0</code> does is "pause", it will never do any complex work like "receiving", "sending" or "routing". </p>
  
  <p>But I am not sure about it because I can not find the <code>Dockerfile</code> of <code>gcr.io/google_containers/pause:0.8.0</code>, so I need someone know clearly about it to tell me the truth, thanks!</p>