Use runit instead of runsvdir in container

* switch to using runit as 'init' as intended
* Update image version to 0.2.2
remove commented lines of code leading space

I had problems with the installer because I wasn't used to YAML nor with its required indentation. IMHO, this way it would have been intuitively clear to me it needs it that way.
Burn version 0.12.0 , it is totally bust.
Merge branch 'runit-init' of https://github.com/Supermathie/discourse_docker
FEATURE: list containers when making a typo
UPGRADE: base image to 14.04
Work in progress, a dev image for Sam
slightly improve YAML error message
vendor bundle business only causes trouble. might as well re-download
FEATURE: test container
change entrypoint for cleaner updates
Add phantomjs to base image, bump up to 0.2.4
add phantom to base image
BUGFIX: ensure a locale is set correctly
FEATURE: ./launcher enter <CONTAINER>
FIX: track tests-passed, not master
FIX: ensure we are tracking the branch
FIX: correct branch stuff
FIX: checkout correct branch in base image.
allow to correctly track head if needed