This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/charts/uyuni/proxy:2023.3.0
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/charts/uyuni/proxy:2023.3.0-build77.1.uyuni2
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.03/charts/uyuni/proxy:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.