This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/15.6/containers/suse/sle-micro-iso/base-5.6:2.0.4
  docker pull registry.opensuse.org/isv/rancher/elemental/15.6/containers/suse/sle-micro-iso/base-5.6:2.0.4-8.148
  docker pull registry.opensuse.org/isv/rancher/elemental/15.6/containers/suse/sle-micro-iso/base-5.6:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.