This container can be pulled via:
  docker pull registry.opensuse.org/home/pushman/bci/cr/16.0/containerfile/bci/openjdk-devel:21
  docker pull registry.opensuse.org/home/pushman/bci/cr/16.0/containerfile/bci/openjdk-devel:21.0.12.1
  docker pull registry.opensuse.org/home/pushman/bci/cr/16.0/containerfile/bci/openjdk-devel:21.0.12.1-18.59

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.