Yes, default is 500. Every Unraid user with his/her own UID has only access to his/her files Onedrive by default. If one Unraid user has multiple Onedrive accounts, you could use the same UID and have access to all files, but by default only the owner of the files (container) has access. To my knowledge - and my Docker knowledge is very limited - there is no easy way to change this in docker (in combination with mounted volumes). Depending on your needs, one 'solution' could be to create an Unraid user (UID) for all Onedrive accounts you want to share files between and use this account to access your files. Perhaps this might be of help.