This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/rancher/elemental-operator/pr-544/containers_next/suse/sle-micro-rancher-iso/5.5:1.3
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/rancher/elemental-operator/pr-544/containers_next/suse/sle-micro-rancher-iso/5.5:1.3-73.1
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/rancher/elemental-operator/pr-544/containers_next/suse/sle-micro-rancher-iso/5.5:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.