title: Install docker on CoreOS container
body: <p>As part of my build I need to produce a docker image so I need docker installed in my CoreOS docker container but I can't seem to apt-get install it (can't find docker-engine or docker.io); it does find <code>docker</code> which appears to be a python module that I can run.</p>
  
  <p>How do I get docker on my container? </p>
  
  <p>Thanks.</p>