title: Can I use a Github repository as the source of a Docker image?
body: <p>Granted, I'm a complete noob with respect to the following, but I think I'm having trouble finding the answer to this question on my own because of the signal/noise based on the search terms docker image, github, etc.</p>
  
  <p>So, concretely, my question is: can I use my forked version of the Rabbitmq official image's Github repository as the value for my <code>FROM</code> directive? </p>
  
  <p>I've tried specifying every variation of the URL I can think of, but haven't had any luck (errors include <code>Error: image ethagnawl/rabbitmq:latest not found</code>, <code>Error: image ethagnawl/rabbitmq:efb97a5171a3672c0c6f38d9127912d5fe753e27 not found</code>).</p>