docs: document SOURCE_DATE_EPOCH in reproducibility guide#922
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officialasishkumar wants to merge 1 commit intobuildpacks:mainfrom
Open
docs: document SOURCE_DATE_EPOCH in reproducibility guide#922officialasishkumar wants to merge 1 commit intobuildpacks:mainfrom
officialasishkumar wants to merge 1 commit intobuildpacks:mainfrom
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Signed-off-by: Asish Kumar <officialasishkumar@gmail.com>
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Summary
This PR fixes #903 by documenting how image creation time can be configured on the reproducibility guide. It adds both user-facing
pack build --creation-timeguidance and the lifecycle-levelSOURCE_DATE_EPOCHoption, and calls out the digest reproducibility tradeoff.Output
Before
The reproducibility guide explained why image timestamps default to January 1, 1980, but did not explain how to override that behavior.
After
The reproducibility guide now explains how to set a meaningful creation time with
pack build --creation-timeorSOURCE_DATE_EPOCH, and notes that doing so changes the resulting image digest.Notes for Reviewers
make test buildSigned commits