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Open Use SOURCE_DATE_EPOCH to configure image create time #809

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natalieparellano opened this issue Feb 25, 2022 · 3 comments
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Open Use SOURCE_DATE_EPOCH to configure image create time #809

natalieparellano opened this issue Feb 25, 2022 · 3 comments
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status/ready type/enhancement New feature or request
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lifecycle-0.14.0

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Description

See related RFC: buildpacks/rfcs#204 (blocking)

See related imgutil PR: buildpacks/imgutil#137

There is currently an open question around how this should be implemented (in imgutil or the lifecycle). Depending on what is decided, this might not require any further work.
@natalieparellano natalieparellano added this to the lifecycle-0.14.0 milestone Feb 25, 2022
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natalieparellano commented Mar 9, 2022 •
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There seems to be general agreement that the "alternate" approach mentioned in the RFC is preferred:

have the exporter read the variable and provide it via a new SetCreatedAt() method on the imgutil.Image interface

There is still some discussion around whether the env var should be SOURCE_DATE_EPOCH or CNB_SOURCE_DATE_EPOCH, but I think we could unblock this because it would be very easy to change it later.

@jabrown85 jabrown85 self-assigned this Mar 9, 2022
jabrown85 added a commit to buildpacks/imgutil that referenced this issue Mar 9, 2022
@jabrown85
Allow callers to pass a custom CreatedAt value
eccaa7c 
This will be used when resolving buildpacks/lifecycle#809. The caller being able to adjust the value will allow us to read the value from different inputs if needed and won't tie imgutil to a specific env var.

Signed-off-by: Jesse Brown <jabrown85@gmail.com>
@jabrown85 jabrown85 mentioned this issue Mar 9, 2022
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jabrown85 added a commit that referenced this issue Mar 10, 2022
@jabrown85
Support SOURCE_DATE_EPOCH
ffcd8f5 
Platforms can set `SOURCE_DATE_EPOCH` to control the timestamp on the exported app images.

See #809 for more details.

Signed-off-by: Jesse Brown <jabrown85@gmail.com>
@jabrown85 jabrown85 mentioned this issue Mar 10, 2022
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natalieparellano pushed a commit that referenced this issue Mar 10, 2022
@jabrown85
Support SOURCE_DATE_EPOCH (#823)
82298b7 
* Support SOURCE_DATE_EPOCH

Platforms can set `SOURCE_DATE_EPOCH` to control the timestamp on the exported app images.

See #809 for more details.

Signed-off-by: Jesse Brown <jabrown85@gmail.com>

* Fixing 0.9 skip-layers test

Signed-off-by: Jesse Brown <jabrown85@gmail.com>

* Added 0.9 exiter test

Signed-off-by: Jesse Brown <jabrown85@gmail.com>
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Resolved by #823

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Thank you so much! This is a long-awaited feature and I am so grateful it landed!

@schneems schneems mentioned this issue Oct 10, 2024
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