This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.12/containers/uyuni/proxy-tftpd:2023.12
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.12/containers/uyuni/proxy-tftpd:2023.12.56.3.uyuni3
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2023.12/containers/uyuni/proxy-tftpd:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.