See Multi-platform images in Docker Manuals for more details.
Create Multi-platform builder
$ # Install support for additional platforms
$ docker run --privileged --rm tonistiigi/binfmt --install all
$ # Create builder
$ docker buildx create --name docker-buildx-multi-platform-builder --driver docker-container --bootstrap
To build all images run
$ .bin/build.sh
NOTE: Images are automatically pushed to Docker Hub