title: Docker Hub Login Without Password
body: <p>So, I'm trying to figure something out, and I haven't seen anything so far.</p>
  
  <p>I setup a docker hub account, and I want to push to a private repo from a CI server, and pull from it on boxes in production.</p>
  
  <p>As far as I can see, though, the only way to do this is to go to every machine and put in my password, the same one I use for web login.</p>
  
  <p>That can't be right, is it?
  Is there something I've missed?</p>