Since docker test suite is now using gocheck, ``defer
deleteContainer(…)`` is not needed anymore.
Fixes#12705
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Add ability to refer to an image by repository name and digest using the
format repository@digest. Works for pull, push, run, build, and rmi.
Signed-off-by: Andy Goldstein <agoldste@redhat.com>