update cloudbuild docs and use a newer buildx multiarch approach #36158
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| - --project=k8s-staging-images | ||
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Is this now same for all projects? Or is it supposed to be changed per project?
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multiarch/qemu-user-static:7.2.0-1is no longer maintained and the correct approach described at https://docs.docker.com/build/building/multi-platform/#install-qemu-manually is to rundocker run --privileged --rm tonistiigi/binfmt --install allAlso, I updated our Cloud Build docs and removed the simple build example as it doesn't follow best practices.
Now, all you need to do is use our image with the default entrypoint and
docker build --platform linux/amd64,linux/arm64,linux/s390x,linux/ppc64le -t foo/bar --push .will work without any additional commands.