No, you don't run the Docker containers run in OrbStack, you can spin up an Alpine instance and run all docker instance on it.
The benefit is that, Alpine has access to all your local and network drives so you can use them. You can sandbox them as well. It's not a big learning curve, just a good VM with access to all drives but isolated to local only.
And you can run Docker inside OrbStack too, it is really good. But most of my containers are optimized Alpine containers so I prefer to run them on an OS they were built for and others in OrbStack.
The benefit is that, Alpine has access to all your local and network drives so you can use them. You can sandbox them as well. It's not a big learning curve, just a good VM with access to all drives but isolated to local only.