stack-back docker compose backups

The goal of stack-back is to make it as easy as possible to make reliable backups of all your stateful container volumes and databases in a docker compose stack.

I found a project called restic-compose-backup while looking for a simple solution to back up my compose stacks. Unfortunately, the project was abandoned, and some things have broken over time. I have forked the project, returned it to a working state, and added some enhancements.