mesosphere/marathon — pull request #335 by mbabineau (2014-06-13 15:46:13+00:00)
Title: Use latest release instead of HEAD for Docker image

Per @guenter's request, build the Docker image with the latest Marathon release instead of build from HEAD (similar to [thefactory/docker-marathon](https://github.com/thefactory/docker-marathon))

Also, make things more idiomatically Docker.