Provide a docker registry

[strk]

Installing, for example: ​http://port.us.org/ (which supports LDAP)

This is an actionable item for #2204

[strk]

My understanding is that Portus is only the authentication layer, the actual registry would be ​https://github.com/docker/distribution

[strk]

Another option is described here: ​https://weblog.wemanity.com/docker-registry-docker-hub-at-home-for-free/

It still uses github.com/docker/distribution for the registry itself but uses ​https://hub.docker.com/r/cesanta/docker_auth/ for authentication (also supports LDAP)

[robe]

This was done a long time ago.

We now have ​https://repo.osgeo.org which includes a docker registry that utilizes our ldap authentication.

currently being used by sac, geoserver, geos, and postgis