Just a simple wrapper to run docker registry in dokku
See the docker registry documentation, especially setting via env vars.
This is enabled by default so that the registry is not publicly available.
REGISTRY_AUTH=htpasswd
REGISTRY_AUTH_HTPASSWD_REALM="Registry Realm"
REGISTRY_AUTH_HTPASSWD_PATH=/auth/htpasswd
Make sure to mount a volume to /var/lib/repository
(or your env var location).
If you do not do this data is ephemereal to the container life.