How does Docker run a Linux kernel under macOS host?

Question

I installed Docker on my macOS Sierra as follows. Note I don\'t have VirtualBox installed.

brew cask uninstall virtualbox
brew cask install docker

Answer 1

Docker is using Apple's Hypervisor Framework: https://developer.apple.com/reference/hypervisor

More reading on the Docker blogs for when then came out last year: https://blog.docker.com/2016/05/docker-unikernels-open-source/