A extended base image for running Ubuntu as a non-root user, including a sshd service.
This is needed in some docker environments where you are not allowed to run images as root user, e.g. OpenShift v3 Online/Dedicated.
It extends the ubuntu-baseimage-unprivileged and comes with the extra service sshd and the user git.
Sshd is running on port 2222 and has the /etc/ssh/keys volume to persist server host keys