title: Where are you supposed to store your docker config files?
body: <p>I'm new to docker so I have a very simple question: Where do you put your config files?  </p>
  
  <p>Say you want to install mongodb. You install it but then you need to create/edit a file. I don't think they fit on github since they're used for deployment though it's not a bad place to store the files.  </p>
  
  <p>I was just wondering if docker had any support for storing such config files so you can add them as part of running an image.  </p>
  
  <p>Do you have to use swarms?  </p>