This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/openjdk-devel:21
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/openjdk-devel:21-26.26
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/openjdk-devel:21.0.4.0
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/openjdk-devel:21.0.4.0-26.26

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.