[dindresto]

You don't need an ARM runner to produce ARM images. Docker buildx supports building for more than one architecture through qemu: https://github.com/microsoft/azure-pipelines-tasks/issues/12...

[qwertox]

I thought building an ARM64 docker image with qemu on a Ryzen 9590X would be a good way to offload building docker images from my Raspberry Pi 4. My benchmarks in building an ARM64 Nginx image was the following:

Ryzen 9590X: 20:09 (20 min 9 sec)

Raspberry Pi 3: 15:46

Raspberry Pi 4 8GB: 4:34

That settled it for me.

[vbezhenar]

For some reason I never considered RPi4 as build server. Thanks for your comment, I have one spare and will try to utilize it as gitlab runner.

[ta988]

Yes but on the ryzen (assuming you meant 5950x) you can build build 16 of them at once... Make sure you give qemu the right parameters too.