I can’t see another way but to mount root into the containers filesystem,
then create a ‘send-only folder’ for each ‘share’ within it that I’d like to duplicate on the receiver server. A share is just a folder somewhere within root.
I’ll take a look at advanced settings to change the marker file location - thanks.
With send folders: Can syncthing not check if a folder is mounted, verses if a folder is empty?
If the source folder is missing (not mounted), then that would be an error and nothing should be sync’ed, verses if it exists but is empty, then the destination should be sync’ed (emptied) to match.