title: How to remove old Docker containers
body: <p>This question is related to <em><a href="https://stackoverflow.com/questions/17014263/should-i-be-concerned-about-excess-non-running-docker-containers">Should I be concerned about excess, non-running, Docker containers?</a></em>.</p>
  
  <p>I'm wondering how to remove old containers. The <code>docker rm 3e552code34a</code> lets you remove a single one, but I have lots already. <code>docker rm --help</code> doesn't give a selection option (like all, or by image name).</p>
  
  <p>Maybe there is a directory in which these containers are stored where I can delete them easily manually?</p>