> I found Watchtower, but polling just struck me as the Wrong Answer. Both too much overhead to keep pinging for the latest builds, and too slow to actually download the latest build. So I took some hints from Watchtower as to what I needed to do (mount the docker sock as a volume) and wrote a tiny Go server that, when pinged with a shared secret, would cause it to run `docker compose up -d --pull always`.

Is the code for this public? I had the same desire when setting up the server for my personal project but as you mentioned I eventually decided it was OK to just poll every two minutes and I would rather work on the project than on configuring docker. What I would like though is cleaning up the older images that are no longer needed.