renderD128 (Intel dgpu) couldn’t be added to the container (linuxserver image). Will take a look later, when I’m home, to find the issue. But may take your time for the update and don’t yolo it like I did :)

You could try using bindfs to spoof the original user id and then chown the whole drive after successfull mounting (i’m a noob, just my understanding of the issue, don’t know if that’s really possible)