title: Docker container disappears without notice
body: <p>I host my webapplication is a docker container using Dokku.</p>
  
  <p>Sometimes (maybe every 1-2 days) the docker container just disappears (doesnt show when <code>docker ps</code>) and as a result, my server goes down.</p>
  
  <p>I haven't been able to find the cause.</p>
  
  <p>I am looking for a way to debug this, any ideas?</p>