This adds the infrastructure for building docker images: the
credential used to upload to Docker Hub as well as the parent jobs
and playbooks to perform the builds.
Change-Id: I7cbbcdd184c4934f1b0ce5905d9760c732b06aa9
Depends-On: https://review.openstack.org/631078
If we clone gerrit to ~/src/gerrit.googlesource.com/gerrit but
want to keep the Dockerfile in system-config, then we need to be
able to run:
docker build ~/src/gerrit.googlesource.com/gerrit -f Dockerfile
Most of the time the dir will just be '.', so put in a sensible
default.
Change-Id: I235080c05e679d2ac270cd5401b85c655fab3112
Upload an image to dockerhub with a change-specific tag in every
gate job, and then, if the change lands, re-tag the image in
dockerhub.
Change-Id: Ie57fc342cbe29d261d33845829b77a0c1bae5ff4
