title: Connection between docker containers via UNIX sockets
body: <p>I’m newbie to Docker, but i’d like to know: is it possible to connect one container from another container on Linux machine (any) with UNIX sockets?
  For example i have one container for application core and second containers which covers database things.
  Second example is two containers with application code, and first container can trigger some events in second.</p>
  
  <p>Performance really matters for me in both cases.
  If it’s impossible to do this way, is there is any solution for these problems?</p>
  
  <p>Thanks!</p>