In the macos case, they actually are. docker runs in a vm on macos. Actually, I ...

pjmlp · on March 16, 2021

Nowhere in what makes a proper container does a VM come into play, unless we are speaking about Docker and the idea of shipping a full blown OS in a zip, to work across heterogeneous hardware.

inetknght · on March 17, 2021

Yeah so the Docker daemon on a Mac is run inside of a VM.

pjmlp · on March 17, 2021

Because they bundle a x86 GNU/Linux package as a runtime.

It doesn't work bare metal for the new macs, and it is extra bloat instead of making use of macOS capabilities.

m463 · on March 18, 2021

It doesn't work bare metal for any mac. It runs in a VM.

Too bad apple didn't help out docker with a macos native version.

  FROM macos:10.13.3 
  RUN xcode-build

would have been really useful