Merge pull request #103 from csmith/master

Add caching of docker images to CI script.
Switch to ubuntu as base image.
Fix locale.
Make ansible docker container a bit more generic
Merge branch 'master' of github.com:greboid/Infrastructure
Fix merge error.
Fix merge error.
Merge pull request #105 from greboid/master

Make ansible docker container a bit more generic
Switch to DMDirc/ansibletest as a submodule.

This depends on DMDirc/ansibletest#2
Tracking.
Merge pull request #106 from greboid/master

Switch to submodule for docker.
Make tests a little more sane.
Actually run ansible...
Merge pull request #107 from greboid/master

Make tests a little more sane.
Move stuff.
Merge pull request #108 from greboid/master

Fix niggly comment!
Initial work on artifactory.
Rename nexus to artifactory.
Finish up artifactory config.
Revert sentry-private changes I dont remember doing.