According to docs https://docs.docker.com/docker-for-mac/multi-arch/ Docker for Mac can run ARM images on an Intel mac via QEMU already

so it doesn't seem a huge leap to imagine the reverse being possible before too long

(I kind of hoped it already was, but I guess the existence of blog posts like this and the one from Docker here https://www.docker.com/blog/apple-silicon-m1-chips-and-docke... indicates there's work to be done on the Docker for Mac app itself to get it working nicely)