Add ARM64 support

[CrimsonFez]

Buildah supports arm64 support, but the plugin does not support anything other than AMD64.

[CrimsonFez]

https://github.com/containers/buildah/blob/main/docs/buildah-build.1.md

The buildah build command allows building images for all Linux architectures, even non-native architectures. When building images for a different architecture, the RUN instructions require emulation software installed on the host provided by packages like qemu-user-static. Note: it is always preferred to build images on the native architecture if possible.