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A comment on About the Rosetta Translation Environment. Parent comment

Re:About the Rosetta Translation Environment by numpad0 on Tuesday June 23, 2020 @11:36AM (#23615333)
So I had to look this up: Docker do not rely on VT-x. If kernel has cgroups it runs.

Hypothetically it could run natively on Windows NT, Linux, Darwin, Solaris, etc if it ported for appropriate APIs. However, most Docker containers contain x86_64 Linux binaries, so the runtime environment has to be binary compatible with x86_64 Linux.

Thus, instead of going through the pain similar to WSL1, Docker people just spin up a midsize Linux VM, run remote controlled Docker daemon in it and call that as the "Docker for [PLATFORM]". This will suffice because use case of Docker is to debug on a laptop and deploy to GNU/Linux servers.

So if ARM macOS runs an x86_64 Ubuntu VM it also means Docker runs.

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Re:About the Rosetta Translation Environment by monocasa on Tuesday June 23, 2020 @02:14PM (#23617936)
Docker on mac does rely on virtualizing a full linux kernel, and xnu doesn't have containerization APIs to do anything different.

> So if ARM macOS runs an x86_64 Ubuntu VM it also means Docker runs.

So far we haven't seen anything like that happening. The State of the Union talk yesterday went as far as running a uname -a just to show that it was an aarch64 debian they were running.

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