title: Newer versions of docker have --cap-add, what CAP's can be added?
body: <p>Newer versions of docker (I think 1.2 and later) have a <code>--cap-add</code> feature.</p>
  
  <p>This gives fine grained control of feature capabilities without opening up everything with <code>--privileged=true</code>.</p>
  
  <p>I've googled it, but can't find a list of capabilities and what they mean. Can anyone help?</p>