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doc: verify local files #1386

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merged 3 commits into from
May 27, 2024
Merged

doc: verify local files #1386

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doc: verify local files
qweeah May 21, 2024
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Merge remote-tracking branch 'upstream/main' into verify-pulled
qweeah May 27, 2024
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Merge remote-tracking branch 'upstream/main' into verify-pulled
qweeah May 27, 2024
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8 changes: 8 additions & 0 deletions docs/proposals/formatted-output.md
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Expand Up @@ -75,6 +75,14 @@ jobs:
cat $PATH
```

### Verify local files

Carol is a build engineer who needs to check whether some locally copied files are identical to the remote artifact content. she can utilize `oras manifest fetch` to generate a checksum file based on the manifest without pulling the whole artifact. (See related issue [here](https://github.com/oras-project/oras/issues/1368)).

```bash
oras manifest fetch $REGISTRY/$REPO:$TAG --format go-template='{{range .content.layers}}{{if index .annotations "org.opencontainers.image.title"}}{{(split ":" .digest)._1}} {{index .annotations "org.opencontainers.image.title"}}{{println}}{{end}}{{end}}' | shasum -c
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```

## Proposal and desired user experience

Enable users to use the `--format` flag to format metadata output into structured data (e.g. JSON) and optionally use the `--template` with the [Go template](https://pkg.go.dev/text/template) to manipulate the output data.
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