Like many, I had issues with sqlite database corruption on Unraid. I found while researching it that it had to do with file locks in the fuse file system unraid uses to merge disks. I found the best way to circumvent this is to use the cache disk for those databases and map them directly. My docker mappings now point to /mnt/cache/share instead of going /mnt/user/share. This solved the issue better than the 6.8.0rc5 fixes. This avoids the system in question completely and solved the stability issues for me.
Joplin was relatively simple to setup on NextCloud. The only difficulty is setting the folder it should run out of. This is done via the webdav url that Joplin connects to. An example is shown below on how to get this going.
/<username>/<path to Joplin directory>
The webdav url just needs your username and the path it should utilize, in my case I just have Joplin setup to go to Documents/Joplin. This would go in the tag above, just add a username and it’s done. This does have to be setup the same way on all Joplin clients or you will end up with files missing from one or another, though they will all be in NextCloud.
Setup is easy enough IF http does not redirect to https. The authentication mechanism for the NextCloud desktop client for some reason doesn’t work when http is redirected to https (ex: in the way let’s encrypt sets it up). With the right server setup after that, everything is straight forward.