Comment by frabonacci

You're totally right, we're not claiming to run macOS inside Docker. The actual VMs run on the macOS host via the Apple Virtualization.Framework; Docker is just the management and packaging layer, similar to how some KVM setups use Docker to orchestrate VMs on Linux.

The title could’ve been clearer, but it’s already out there and can’t be edited - appreciate you pointing it out and adding the nuance!