Thanks for the replies both!
After some trial and error I've fixed most of my issues.
(Please note, these are probably not the correct fix, more like a bodge )
- I realised I didn't need to run Cockpit and to just use Portainer for dockers, Cockpit has now been deleted, but I did find one very useful feature of Cockpit! (see the next point)
- Cockpit found the missing partition I made on my SSD. I just clicked mount and it showed up instantly on OMV Admin panel, I backed up my containers, stopped them, deleted them, removed docker, pointed a fresh install of docker to a new folder on that new partition of my SSD, I just need to re-add my docker containers (now on the SSD).
- I found an install script for HASS.io (full fat home assistant) that you run via putty that builds the supervised version of home assistant in your existing Docker. I ran that and it worked! I now have full fat Home Assistant running in Docker with each part of it visible within portainer running on my SSD.
- I do need to work out how to pass through a USB to the docker container which will be my next hoop to jump though (I have a Conbee Zigbee Stick) but haven't looked into that yet.
The one last thing I'm struggling with is, I used the following code to put into the OMV Shell, which I found on here (The forum):
However I can't find the "sharedfolders/hassio" folder to grant myself access or to add it to a SambaShare so I can easily add custom cards etc.
Does anyone know where that would be created? Or how I could find it via OMV?