I started setting up CI in my homelab a few nights ago. Forgejo has a built-in CI system modeled after GitHub Actions — you write a workflow file, deploy a runner container, and it picks up jobs when you push code. The setup wasn’t the hard part. The hard part was that it forced me to actually think about Docker’s architecture in a way I’d been quietly avoiding. Specifically: what happens when you have more than one Docker daemon running, and how do you keep track of which one is doing what? ...