ci(docker): multi-arch image (amd64 + arm64) so the plugin works on Apple Silicon - #10
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The single-runner build produced an amd64-only manifest, so `docker pull`
on Apple Silicon failed ("no matching manifest for linux/arm64/v8") — the
plugin could not run on Apple Silicon Macs at all.
Rebuild as a proper multi-arch manifest list: a matrix builds each arch on
its OWN native runner (amd64 on ubuntu-latest, arm64 on ubuntu-24.04-arm —
free for public repos, no QEMU), pushes by digest with provenance:false,
then a merge job stitches the digests into one tagged manifest list and
inspects it. Docker now auto-selects the native arch on every host.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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The first published image was amd64-only, so
docker pullon Apple Silicon failed outright (no matching manifest for linux/arm64/v8) — the plugin could not run on Apple Silicon Macs at all.Fix
Rebuild as a proper multi-arch manifest list using a native-runner matrix (no QEMU):
linux/amd64onubuntu-latest,linux/arm64onubuntu-24.04-arm(free for public repos), in parallelprovenance: false(so the merged list is exactly the two arches, nounknown/unknownattestation noise)mergejob stitches the digests into one tagged manifest list and inspects itVerified (on the branch test tag, before touching
latest)Dispatched this workflow from the branch → produced
ghcr.io/mohitbadwal/ringback:feat-plugin-multiarch:linux/amd64+linux/arm64docker manifest inspecton an Apple Silicon Mac → both arches present,arm64 present: TrueMerging this runs the workflow on
main, which applies thelatesttag →latestbecomes multi-arch. After merge I will confirmlatestresolves arm64 and clean up the temporaryfeat-plugin-multiarchtag.(Minor: the Node 20 deprecation warning from the actions is non-blocking — optional version bump later.)
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