Is this feasible?
I’m gonna be “that guy”, and I’m sorry but I don’t want you to go down a road that could risk data loss.
A permanent installation of a large image isn’t really docker-conducive, imho.
Maybe just allocate a new VM and install it there?
I set up one before. My experience if your active users are less than 50 & they don’t use CI that much, then it is somehow working.