I don't have enough git lfs storage to store the tar of my docker image upon each commit. The image is supposed to be private and I don't want to create my own docker registry.

Is there a workflow that would allow me to store the image only in the HEAD of the master branch and were I wouldn't have to force push or where I would at least force push in a semi-safe way?

So what I want is that commiting on the master branch results in the docker image lfs pointer getting deleted from the previous commit and getting removed from lfs of course.