This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/containers/suse/sl-micro/6.1/baremetal-disk-image:2.2.0
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/containers/suse/sl-micro/6.1/baremetal-disk-image:2.2.0-2.43
  docker pull registry.opensuse.org/isv/rancher/elemental/staging/containers/suse/sl-micro/6.1/baremetal-disk-image:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.