Are there any dead simple/lightweight remote build systems out there? I’m not really even calling it CI, in my case I just want to be able to do my builds on a different machine, I don’t need job queueing, or a web ui, or anything. I guess very simple management (basically starting and stopping a build, and ideally notifying me of completion/results so I can retrieve the build artifact)
Could still be overkill for your use case, but you might want to check out Drone CI. I think it may require Docker, so hopefully that isn't a deal-breaker for you.