Non-snap version for linux

[fatalsaint]

Ok, I made changes to the startup script.

It will detect if a /media/$USER/USB DISK directory exists, and if so, mount it inside the container automatically.

If you could test the latest and let me know if it works it'd be appreciated.

[fatalsaint]

Re-built the image today and it successfully pulled 6.1.4.1 with no changes. So still working it seems.