This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/bci/golang:1.21
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/bci/golang:1.21-2.20.7
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/bci/golang:oldstable
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/bci/golang:oldstable-2.20.7

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.