Thanks for the mention! I'm part of the Tutum team, and we actually made an open source project called Boatyard.io

It's basically a web UI that builds images from tarballs, dockerfiles, and github repos. We use it internally all the time and we thought we'd contribute back.

You can find our post about it here:

http://blog.tutum.co/2014/05/26/introducing-boatyard/

Great job on octohost.io!