This container can be pulled via:
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.08/containers/uyuni/proxy-tftpd:2022.08
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.08/containers/uyuni/proxy-tftpd:2022.08.21.7.uyuni2
  docker pull registry.opensuse.org/systemsmanagement/uyuni/snapshots/2022.08/containers/uyuni/proxy-tftpd:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.