Add aarch64-linux nix support and docker image 🙏

[wolf31o2]

Why

Running within Docker Desktop on MacOS M1+ will be Linux/ARM and Linux/ARM is growing in popularity in the cloud, where a majority of dApps will likely be deployed.

[ch1bo]

Are multi-platform images related to this? https://docs.docker.com/build/building/multi-platform/

[wolf31o2]

Correct. This can be accomplished multiple ways, using emulation via QEMU and a single manifest, or by creating individual manifests on the appropriate architecture runners and then creation of a multi-image manifest with the individual images appended.

[noonio]

Can you not just build the docker image on an aarch64 machine yourself, when you require it?