Comment by n4bz0r
For a throwaway, I don't think Jenkins will be much of a problem. Or any other tool for that matter. My only suggestion would be to still put some extra effort into building your own Jenkins container on top of the official one [0]. Add all the packages and plugins you might need to your image, so you can easily move and modify the installation, as well as simply see what all the dependencies are. Did a throwaway, non-containerized Jenkins installation once which ended up not being a throwaway. Couldn't move it into containers (or anywhere for that matter) without really digging in.
Haven't spent a lot of time with it myself, but if Jenkins isn't of much appeal, Drone [1] seems to be another popular (and lightweight) alternative.