This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/bci/openjdk:21
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/bci/openjdk:21.0.9.0
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/bci/openjdk:21.0.9.0-36.18

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.