This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/rust:1.78
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/rust:1.78-2.21.5
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/rust:oldstable
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/bci/rust:oldstable-2.21.5

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.