This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.05/containers/uyuni/proxy-salt-broker:2022.05
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.05/containers/uyuni/proxy-salt-broker:2022.05.11.1.uyuni1
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.05/containers/uyuni/proxy-salt-broker:beta
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.05/containers/uyuni/proxy-salt-broker:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.