Command to run this container:

podman run -d --name docker_auth -p 5001:5001 -v /etc/registry:/etc/registry registry.opensuse.org/opensuse/docker_auth:latest --logtostderr /etc/registry/auth_config.yml

/etc/registry: contains auth_config.yml and the certs subdirectory, for
               example configuration files see docker_auth.rpm

Arguments:
-v N increases verbosity
--logtostderr prints all informations on stderr
/etc/registry/auth_config.yml path of the configuration file