Plex in Docker on Synology, w Intel HW transcoding inc. HDR

I wish I could help you further but have more to complete before C.O.B. today for DSM 7.

I wish you luck.

Maybe someone else has done this already on XPE.

no problem. I am OK with not getting this done. I just thought I would contribute some time to testing. thanks very much!

I finally did get this working. I had to create the docker via command line, not via syno interface and not via the portainer tool. it finally worked as desired.