This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/bci/openjdk:21
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/bci/openjdk:21-18.10

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.