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Docker multi-platform build using buildx

Posted on 01 Feb, 2024

Build for different platforms

Tip: To figure which platforms to build for, head over to dockerhub and find what architectures your base image supports. For example, the alpine image supports linux/amd64, linux/arm64 etc.
docker buildx build --load\
--platform linux/amd64,linux/arm64,linux/386,linux/s390x,linux/arm/v7,linux/arm/v6,linux/ppc64le \
-t image:tag \
-f Dockerfile .
  • Builds generated using buildx will not be available in the local docker registry. To push the image to the registry, use the --push flag.
  • To load the image into the local docker registry, use the --load flag.
    • After load you can choose to export it to a tar file using docker save <image:tag> > test.tar and test it on another machine using docker load < test.tar.