This container can be pulled via:
  docker pull registry.opensuse.org/home/sthackarajan/branches/kernel/tools/images/sle_11_sp4/kernel-build-initrd:11.4
  docker pull registry.opensuse.org/home/sthackarajan/branches/kernel/tools/images/sle_11_sp4/kernel-build-initrd:latest
  docker pull registry.opensuse.org/home/sthackarajan/branches/kernel/tools/images/sle_11_sp4/kernel-build-initrd:sles11sp4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.