This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/teal53/rancher/elemental-operator/pr-407/15.4/rancher/elemental-operator/5.3:1.1.5
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/teal53/rancher/elemental-operator/pr-407/15.4/rancher/elemental-operator/5.3:1.1.5-68.1
  docker pull registry.opensuse.org/isv/rancher/elemental/pr/teal53/rancher/elemental-operator/pr-407/15.4/rancher/elemental-operator/5.3:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.