Add docker support

[geekflyer]

I would like to build M1 compatible docker images on Cirrus-CI.

Since it's currently not part of the image, I tried setting up docker as part of the pipeline (this is my WIP branch: aptos-labs/aptos-core#1876) but it doesn't work as it's a bit tricky to install docker on Mac in a headless environment apparently.

Would be great if a base image with pre-installed docker was made available.

Thanks!

[fkorotkov]

The problem here is that Docker needs nested virtualization which is not supported in Apple's Virtualization.Framework that Tart is using. Nether less Docker on M1 is using Virtualization.Framework itself and runs a Linux VM to build images so I don't think there will be a difference in building on M1, QEMU or native Arm.

But once Docker will be able to be executed from within a VM we'll add it into the images.

[timsutton]

as it's a bit tricky to install docker on Mac in a headless environment

@geekflyer
It's been years since I've looked into doing this, but it had been an issue in the very beginning: docker/for-mac#717

Have you looked at this? https://docs.docker.com/desktop/install/mac-install/#install-from-the-command-line

[fkorotkov]

BTW there is now Arm64 Docker Builder option that runs Linux.