Docker: build mulitarchitecture images

[RoEdAl]

Thanks to docker/build-push-action@v6 action now it's easy to build multiarchitecture Docker images. So, I decided to modify docker-ghcrio.yml workflow and build (publish) Docker images for ARM64 (linux/arm64) and ARM (linux/arm/v7,linux/arm/v6) architectures. Dockerfile was also improved a bit.

Related PR: go-graphite/carbonapi#858

[deniszh]

Hi @RoEdAl

Thanks, I like your idea, but:

1. tests are broken, could you please check?
2. image build run for 30m and not even finished, maybe it's stuck because of broken tests. But if not, maybe it's better to stick to amd64 and linux/arm64 only ?

[RoEdAl]

1. Dockerfile was fixed. Please run tests again.
2. Building all images takes about 45m. This is normal because non-x86 architectures uses QEMU which is rather slow. Furthermore, tests are performed on every platform (architecture).

[deniszh]

45 min is too long, I'm afraid. We need to do that somehow asynchronously, for not waiting 45 minutes to merge PR

[RoEdAl]

Maybe docker-ghcrio.yml workflow triggered by PR should build only one linux/amd64 Docker image?

[deniszh]

Make sense. We can build everything only for releases.

[deniszh]

PS: tests still not fixed :(
You can just test them using "make image"

[RoEdAl]

The problem is that make image command works fine on my computer.
My next try is to execute make clean before make inside Docker container so please run tests again.