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this post was submitted on 03 Jul 2023
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Programmer Humor
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When I was in school I once used a IOS emulator running inside a docker container of MacOS running on a linux machine. It works surprisingly smoothly.
The difference between Docker and a VM is that Docker shares a kernel, but provides isolated processes and filesystems. macOS has a very distinct kernel from Linux (hence why Docker on macOS uses a Linux VM), I would be shocked if it could run on a Linux Docker host. Maybe you were running macOS in a VM?
Nope, Mac OS as a Docker container, it's a thing: https://hub.docker.com/r/sickcodes/docker-osx
Also you don't need a Linux VM to run docker containers on a Mac host btw
TIL, good to know!
The first layer in that docker container is actually KVM. So you run the container to run kvm, which then emulates osx.