This container can be pulled via:
  docker pull registry.opensuse.org/isv/rancher/elemental/testing/teal52/15.3/rancher/elemental-operator:0.4.2
  docker pull registry.opensuse.org/isv/rancher/elemental/testing/teal52/15.3/rancher/elemental-operator:0.4.2-16.22
  docker pull registry.opensuse.org/isv/rancher/elemental/testing/teal52/15.3/rancher/elemental-operator:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.