Create a CI/CD pipeline for compute/gpu image builds

After a successful packer build we have to automate the process of including new features into the build via gitlab ci/cd pipeline.

added Backlog label

assigned to @atlurie

changed the description

marked this issue as related to #41 (closed)

changed milestone to %Amperenodes partition available to users

removed the relation with #41 (closed)

Closing this issue as it turned into a milestone of it's own - https://gitlab.rc.uab.edu/groups/rc/-/milestones/28#tab-issues

closed