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docs: note multi-platform limit when sharing image artifacts - #25768

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docs: note multi-platform limit when sharing image artifacts#25768
locker95 wants to merge 1 commit into
docker:mainfrom
locker95:docs/share-image-jobs-multiplatform

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The share-image-between-jobs example uses type=docker + artifact upload. That path is single-platform only — multi-arch images can't be exported that way and loaded on the next job.

Adds a short note pointing people at registry/cache instead, with a link to the buildx discussion.

Fixes #25044

The GHA share-between-jobs example uses type=docker tarballs, which are
single-platform only. Call that out so readers don't chase a multi-arch
artifact path that isn't supported.

Fixes docker#25044

Signed-off-by: Dean Chen <862469039@qq.com>
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locker95 requested a review from dvdksn as a code owner August 11, 2026 02:56
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@github-actions github-actions Bot added the area/build Relates to Dockerfiles or docker build command label Aug 11, 2026
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Page doesn't say it does not support multiplatform

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