This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/stable/containers/rancher/elemental-teal-iso/5.4:1.2.3
  docker pull registry.opensuse.org/isv/rancher/elemental/stable/containers/rancher/elemental-teal-iso/5.4:1.2.3-1.33
  docker pull registry.opensuse.org/isv/rancher/elemental/stable/containers/rancher/elemental-teal-iso/5.4:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.