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Apple mentioned they are specifically "working with Docker to support 'these things' in coming months". Confirmed with some Docker folks they are working on "so

Apple mentioned they are specifically "working with Docker to support 'these things' in coming months". Confirmed with some Docker folks they are working on "something". All very nondescript, but they said they can't talk about it yet.

lsllc 6y ago
Possibly they'll do something like WSL/WSL2 to provide an ARM based Linux kernel interface and then use Rosetta2 to translate the x64 code in user space to ARM? Having ARM only containers would be mostly useless (it's technically possible, but I bet there are very few ARM container images around).
- cpuguy83 6y ago
  All the base images are multi arch, which I suspect covers the majority of uses in dev envs.
- dannyw 6y ago
  There are heaps and heaps of ARM containers around thanks to the Raspberry Pi. I've never had a problem running Docker on my Pi, and I don't expect anyone will have a problem running Docker on a Mac given Apple's much much larger developer market share.
numpad0 6y ago
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.
- monocasa 6y ago
  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.

lsllc 6y ago

Possibly they'll do something like WSL/WSL2 to provide an ARM based Linux kernel interface and then use Rosetta2 to translate the x64 code in user space to ARM? Having ARM only containers would be mostly useless (it's technically possible, but I bet there are very few ARM container images around).

cpuguy83 6y ago
All the base images are multi arch, which I suspect covers the majority of uses in dev envs.
dannyw 6y ago
There are heaps and heaps of ARM containers around thanks to the Raspberry Pi. I've never had a problem running Docker on my Pi, and I don't expect anyone will have a problem running Docker on a Mac given Apple's much much larger developer market share.

numpad0 6y ago

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.

monocasa 6y ago
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.