[RFE] Support manifests list (Docker & OCI) about skopeo HOT 9 CLOSED

@runcom is this likely to happen soon? or is https://github.com/estesp/manifest-tool the way to go?

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Skopeo has skopeo copy --all after #741.

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@SvenDowideit I'd love estesp's tool merged back here (where it was forked from, skopeo). I have this on my todo but if anyone wants to take it and help, please do so, I don't have any ETA otherwise.

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I too think this would be good to get these tools merged back. @estesp What do you think?

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Note that docker upstream is basically merging Phil's tool in the Docker cli (via a subcommand called "manifest").

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FWIW containers/image, and skopeo, can consume docker schema2 manifest lists (by choosing the current architecture).

That’s by no means a comprehensive support, of course — but it would be nice to flesh out what this ticket means, “support manifest lists” is too vague to ever say “yes, this has happened”.

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It would be great if skopeo copy handled manifests lists by copying all the arch specific manifests, and actually create a manifest list. Currently, it only copies a single arch and creates manifest schema v2.

This probably depends on the destination registry being used. Some implementations may not support manifest lists (quay.io at time of writing). It may also only make sense when the destination is a registry, e.g. docker://.

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There is a WIP PR at containers/image#400 , I’m afraid the progress has stalled for some time.

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Still open issue, though no one is working on it right now, have to gauge priority.

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