Transcoding setup issues

[Deegee88]

Hi Dread, wondering if you can help.
I've decided to spin up a linux VM to see if i can get this working here - i've installed portainer and am going to try to run jellyfin through this.
I've got a yml file : https://sourceb.in/bHqDedPan0
but i'm not 100% sure what i'm doing...i need to be able to access the smb share where the media is stored but i'm coming across errors.
I'm hoping you'll be able to see the obvious error!