You can `docker rm -v <container>` to remove a ccontainer + its volumes. For larger stuff typically I just read the docker-compose file with all of that listed in one place, so its pretty easy to just `docker rm` the volumes and networks. With apt I have no idea what files were added or modified and there's no simple "undo".
You can list package content with 'dpkg -L', although, granted, it doesn't cover files that were somehow created by the install script. Also 'apt purge' removes all files including config.
