This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/arm/totest/containers/opensuse/haproxy:2.6.6
  docker pull registry.opensuse.org/opensuse/factory/arm/totest/containers/opensuse/haproxy:2.6.6-4.773
  docker pull registry.opensuse.org/opensuse/factory/arm/totest/containers/opensuse/haproxy:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.