This looks more like the Podman version of Docker Desktop (which is closed source, and no longer free), effectively, as it's handling the virtualization aspects for you according to[0].
[0] https://twitter.com/simnalamburt/status/1434244533001224192
[0] https://twitter.com/simnalamburt/status/1434244533001224192
I honestly looked just now and couldn't find anything.
That is part of the "Docker Desktop" offer, which is non-free.
* Virtualbox * Your favorite Linux distro * Docker engine on the Linux VM * Docker CLI on the Mac host * A variety of filesystem sync solutions (I don’t remember their names but there are several)
Alternatively there’s also docker-machine.
The closed source app gets you the convenience of not having to set that all up. If you don’t like installing closed source apps you probably prefer to set things up yourself anyway. So what’s the problem?