This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/bci/golang:1.21
  docker pull registry.opensuse.org/opensuse/bci/golang:1.21-2.15.2
  docker pull registry.opensuse.org/opensuse/bci/golang:oldstable
  docker pull registry.opensuse.org/opensuse/bci/golang:oldstable-2.15.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.