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21 changes: 21 additions & 0 deletions hooks/pre_build
Original file line number Diff line number Diff line change
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#!/bin/bash

BUILD_ARCH=$(echo "${DOCKERFILE_PATH}" | cut -d '.' -f 3)

if [ -z "$BUILD_ARCH" ] || [ "$BUILD_ARCH" == "amd64" ]; then
echo 'qemu-user-static: Registration not required for current arch';
exit 0
fi

#
# DockerHub multiarch hack
# @see https://stackoverflow.com/questions/54578066/how-to-build-a-docker-image-on-a-specific-architecture-with-docker-hub
# @see https://stackoverflow.com/questions/55818831/dockerhub-automated-build-for-arm-arm64-permission-denied
# @see https://stackoverflow.com/questions/44925788/dockerfile-compile-in-local-machine-but-fails-in-docker-hub-for-automated-build
# @see https://github.com/cmosh/alpine-arm
# @see https://github.com/balena-io-library/armv7hf-debian-qemu/tree/master/bin
# @see https://wiki.debian.org/RaspberryPi/qemu-user-static
# @see https://github.com/multiarch/qemu-user-static
# @see https://aquarat.co.za/tag/dockerhub/
#
docker run --rm --privileged multiarch/qemu-user-static:register --reset