permission denied on external folder | Synology photo folder

[Gitonthegrid]

Dear all,

I have did some testing yesterday, and all was working fine. Now I want it to take it a step further, but and index de full photo folder on my Synology NAS. So I want to add a external library

I have made a test user in Synology that has the right permissions to the docker folder and to the (default) photo folder on the Synology. I have lookup up de UID and the GUID for that user, and added it to the docker compose. I used the mariushosting as a template and changed the UID and GUID to the specific user I made.

But now comes the problem. When I deploy the stack. The container get Exited, because it says:
permission denied, watch '/usr/src/app/external/@eaDir/[email protected]

If I remove the external mapping in de compose file, everything is working fine. Can someone please help me to understand the permissions for external folders and there own users in Synology?

[Gitonthegrid]

To be clear, if I deploy the stack without the external library line (see below) then everything works fine. So this is pure the permission issue on that folder. I already tried to give acces to all folders and applications for that user, but without luck.

- /volume1/photo:/usr/src/app/external