This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/containers/uyuni/proxy-squid:2023.03
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/containers/uyuni/proxy-squid:2023.03.35.1.uyuni2
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/containers/uyuni/proxy-squid:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.