Finally, there is an official Joomla (4.x) Docker made for unRAID. But it is not done well. As in, you will lose all your settings and data when you restart your docker. So you need to copy the data outside the docker into the appdata folder. (Or wherever you want it)
Inside the docker image, the Joomla folder resides here:
And this is the folder you need to make “external” by adding a path to the edit/install panel.
- Give it a name at “Name:”
- Enter the following line to “Container Path:”
- Enter the following line to “Host Path:”