add aarch64-linux images

[zimbatm]

Right now, only x86_64-linux images are being pushed. For M1 users, aarch64 is nice.

[mweinelt]

Has become much more relevant as one can easily rent arm64 VMs on many cloud providers for cheap.

[emilylange]

I might pick this up :)

[Mic92]

You might find the work in this PR helpful: nix-community/nixos-images#87

[emilylange]

Oh wow, thanks for the pointer!
I had a small PoC in my local work tree that would have kept using GitHub Actions (and buildah for multi-arch manifests).

Edit (actually not an edit, but I was just about to press "Comment"):
nix-community/nixos-images#87 has been closed just a few minutes ago.
Uhm? Should I keep the GitHub Action now?

[Mic92]

Oh wow, thanks for the pointer! I had a small PoC in my local work tree that would have kept using GitHub Actions (and buildah for multi-arch manifests).

Edit (actually not an edit, but I was just about to press "Comment"): nix-community/nixos-images#87 has been closed just a few minutes ago. Uhm? Should I keep the GitHub Action now?

It is just that a different contributor wants to take over the pr. We still are planning to use it: nix-community/nixos-images#87 (comment)