title: How can we add capabilities to a running docker container?
body: <p>Is it possible to add a capability (for ex: NET_ADMIN) after the container has actually started?</p>
  
  <p>I started a container few days ago and a service provided by it is being used by several other processes which are running remotely on other servers. I need to add a loopback interface to it, but unfortunately, I forgot to start the container with <code>--cap-add=NET_ADMIN</code> and hence couldn't add the interface now. </p>
  
  <p>I'm looking for an option, if it is possible to give this capability somehow to this container.</p>