How to build x86 (and others!) Docker images on an M1 Mac – Jaimyn’s Blog – TL;DR:

docker buildx create --use
docker buildx build --platform linux/amd64,linux/arm64 --push -t <tag_to_push> <context_path>

I need some ARM64 servers in my DC 🤣 I wouldn’t have to do this but for the fact that my workstation is now an ARM (Apple Silicon M1) 😅