Start a postgres database:
docker run -d --name=pg-netdisco postgres
Link it to netdisco:
docker run -d --name=netdisco -e NETDISCO_WR_COMMUNITY="private" --link pg-netdisco:db -p 5000:5000 sheeprine/docker-netdisco
Connect using your browser to http://IP-of-docker-host:5000/ with a username "admin" and a password of "password"