The attached config worked for me. Notice the repository is not as per docker hub, it's:
Docker offers an upgraded container that doesn't appear to do anything (?) but attempting to upgrade did reset some settings within the xpenology instance. Does this imply that not all config is stored in the single volume (image)? That might need fixing.
I added a raid group and then a volume (basic, btrfs) from within storage manager.
I don't fully understand this (from the segator/xpenology-docker github read.me)
Are the 9P drivers already integrated?
I need an idiot's guide!