Apptainer: Application Containers for Linux

I tried looking into this, but I do development work on Mac, which is not supported, and so it became a non starter.

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.

It's not perfect... For example, I don't think there is an easy way to use Apptainer containers w/ VS Code. But it's there if you want to play with it.

I was only partially aware of it as I tend to use Colima more than Lima, but have started to move towards Lima more in general.

That said, I still stick to Docker-style containers personally as they are more widely supported (e.g. VS Code). However, I also work a lot in HPC, so migrating workflows cross-platform to Apptainer containers is a goal of mine.