libraries disconnect every couple weeks

[TheDreadPirate]

It looks like you have the config, cache, and transcode directories all in the same root folder on the host. Meaning that all of these folders are intermingling. The cache and transcode folders have daily cleanup jobs that are almost certainly deleting files that shouldn't be deleted in the config folder.

config, cache, and transcode should be in their own folders to ensure separation.

config should be located in /mnt/gurke_pool_01_SSD/apps/jellyfin/config
cache should be located in /mnt/gurke_pool_01_SSD/apps/jellyfin/cache
transcodes should be located in /mnt/gurke_pool_01_SSD/apps/jellyfin/transcodes

Or something like that.