Add support for ARM architecture in Docker testing

[brunodam]

Description

The current Docker-based testing setup is designed for x86_64/amd64 environments. On ARM-based systems (e.g., Apple Silicon Macs, Raspberry Pi, Graviton), the make test-docker-all target cannot run properly because the base images and binaries are not built for ARM.

Example

On an ARM machine:

make test-docker-ubuntu

fails with errors such as:

exec format error

Expected

make test-docker-ubuntu should run successfully on both amd64 and arm64 hosts.

Contributors on Intel or ARM servers should be able to build and run tests without extra steps.

Actual

make test-docker-ubuntu fails on ARM hosts due to architecture mismatch.

Notes

• Adding ARM support will improve developer experience and broaden test coverage.