I’ve not seen that option, but I use syncthing instead of the phone application to sync my photos to a specific folder on my NAS which is then an external library for Immich.
TBH, I don’t want anything deleting anything automatically.
I’ll often delete newer pictures of temporary stuff but keep older pictures of my frinds & family, so, that’s not a feature I’d see any value in. It tends to just make me lazy and build up GBs of junk photos on my NAS (and backups…)





I’m running it bare metal on my NAS.
No problems, plus I don’t have to do extra container stuff.