Install Discourse for development using Docker

I’ve got building a discourse dev environment working and able to test my patch, but how do I get my patch into my production instance? I tried building base, and then ./launcher rebuild app --run-image discourse/base:build, but it doesn’t seem to result in a running Discourse instance.

Usually I get an error about the syslog group missing, but I commented that out, and still didn’t end up with a running site. And nothing of note in docker logs.