Chiming in from Australia. Even considering the fact we have horrific internet anyway, the lack of Australian registry mirrors means that a Docker pull can take ~5 minutes for something like ubuntu:16.04. Docker pushes of ~100MB can take hours. That's just not acceptable.

I also contribute to Docker and other container technologies, and I cannot express in words how horrifically long the Dockerfile-based build and integration testing process takes. It takes about an hour in America, and more than double that in Australia.