Filesystem is automatically mounted to the container. I believe this one use LXC through distrobox, Fedora silverblue does the same with toolbox which used podm

Filesystem is automatically mounted to the container. I believe this one use LXC through distrobox, Fedora silverblue does the same with toolbox which used podman. If you want to give it a try you can install distrobox or toolbox right now on any distro, this is not unique to immutable readonly distros. This allows you to separate system / userland package management and have access to say, pacman on a fedora for example.