This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/bci/spack:0.22
  docker pull registry.opensuse.org/opensuse/bci/spack:0.22-25.22
  docker pull registry.opensuse.org/opensuse/bci/spack:0.22.1
  docker pull registry.opensuse.org/opensuse/bci/spack:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.