This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.04/containers/uyuni/proxy-salt-broker:2023.04
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.04/containers/uyuni/proxy-salt-broker:2023.04.36.12.uyuni2
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.04/containers/uyuni/proxy-salt-broker:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.