Tiny backup script

Stop all the running docker services, then run this backup all appdata except plex
docker run -it -v /mnt/user/data/backups/2025-09-06:/backup -v /mnt/cache/appdata:/appdata gitea.home.joemonk.co.uk/joe/appdzip:1

But also: XZ_OPT=-8 XZ_OPT=-T0 tar cJf /mnt/user/data/backups/2025-09-06/flash.tar.xz /boot just to capture the flash drive