Fast and easy installation of Docker VM on OS X
github.com
github.com
PS - I think the boot2docker folks are looking into this as well.
https://github.com/noplay/docker-osx/commit/a7470f9f583cfdad...
We're interested in using boot2docker for docker-osx too. Ubuntu is unnecessarily heavyweight for just running Docker.
It's "inelegant" in that it's still a command that never ends. But that's how all Unix systems work anyway :)