See: https://apptainer.org/docs/admin/main/installation.html#mac
Just like with Docker, it spins up a Linux VM that integrates with Apptainer. You can install/use it with Lima (much like Docker).
You can also install it with `brew install lima` and then run `limactl start template://apptainer` to get a running Apptainer compatible VM running.
Hm, not sure why I missed that, or maybe I didn't miss it and for some reason decided to just go with Docker. Either way thanks for pointing it out, I'll keep this in mind.