I wrote a Docker deployment tool that has many similarities to Beluga <a href="https://github.com/mrinterweb/freighter" rel="nofollow">https://github.com/mrinterweb/freighter</a>. I'm going to sound awfully biased here, but I believe Freighter has more features than Beluga. Then again there may be some things about Beluga I don't know about.<p>Freighter can handle multiple environment config files, environment var management, old image and container cleanup. Freighter uses Docker's REST API and therefore does not need ruby installed on the hosts, but it does need the REST API enabled to be accessible on 127.0.0.1. If you'd like to know more about Freighter reach me at @mrinterweb or ask your question here.