feat(ci): build multi-arch Docker image (linux/amd64 + linux/arm64)#137
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feat(ci): build multi-arch Docker image (linux/amd64 + linux/arm64)#137
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Adds QEMU setup and the `platforms: linux/amd64,linux/arm64` arg to the build-push-action. Apple Silicon Macs and arm64 Linux hosts get a native image (pulled automatically via manifest selection) instead of running under QEMU emulation. amd64 users are unaffected. Tradeoff: arm64 is cross-compiled via QEMU on the x86_64 runner, so release builds are noticeably longer (the torch install + model bake stage both run emulated). Acceptable at current release cadence; can upgrade to a native arm64 runner matrix if it becomes painful.
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Follow-up to #135 and #136.
Summary
platforms: linux/amd64,linux/arm64to thepublish-dockerjob. Apple Silicon Macs and arm64 Linux hosts (e.g. AWS Graviton) now get a native image through manifest selection, instead of running the amd64 image under Docker Desktop's emulation — which is especially slow for this image because oftorch+ sentence-transformers at runtime.Tradeoff
arm64 is cross-compiled via QEMU on the x86_64 runner, so release builds take noticeably longer (the torch install in stage 1 and the model bake in stage 2 both run emulated). Acceptable for our release cadence; if it becomes painful we can split into an amd64/arm64 matrix using GitHub's native
ubuntu-24.04-armrunner +docker/metadata-actionmanifest merge.Test plan
workflow_dispatchwithtest_docker=true) after this lands to verify both platforms build successfully. The:testtag gets a multi-arch manifest;docker buildx imagetools inspect cocoindex/cocoindex-code:testshould show both platforms.🤖 Generated with Claude Code