feat(ko): support labels and creation times

[maxbrunet]

• Add a labels key-value map to the kos config.
  My interest is to be able to label the built images: https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry#labelling-container-images
• Add creation times to allow using the commit timestamp as meaningful creation time

[caarlos0]

looks good overall.

I guess we should also check that the actual end image has the labels?

On Docker tests, line 54, we have a shouldFindImagesWithLabels which I think we can copy/edit as needed here...

Other than that, great work! Thanks for the PR 🙏

[developer-guy]

lgtm, great catch, thanks for making this!

[maxbrunet]

what I have done does not work

nvm, I confused labels which are in the config with manifest annotations

---

I added more tests for the labels, but also for the platforms and SBOM, and caught a bug!

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I tried to use Bare: true for the tests to make the image reference easier to build, but I get an error:

publish: GET http://localhost:5052/v2/goreleasertest/testapp/blobs/uploads/: BLOB_UPLOAD_UNKNOWN: blob upload unknown to registry

No idea why it makes a GET request and not a POST 😕

[caarlos0]

thanks! This looks good, will go out on v1.17 (by EOM).

[codecov]

Codecov Report

Merging #3852 (12ef6dc) into main (5327759) will increase coverage by 0.06%.
The diff coverage is 100.00%.

❗ Current head 12ef6dc differs from pull request most recent head 0d7139c. Consider uploading reports for the commit 0d7139c to get more accurate results

@@            Coverage Diff             @@
##             main    #3852      +/-   ##
==========================================
+ Coverage   83.34%   83.40%   +0.06%     
==========================================
  Files         123      123              
  Lines       10581    10620      +39     
==========================================
+ Hits         8819     8858      +39     
  Misses       1431     1431              
  Partials      331      331              

Impacted Files	Coverage Δ
pkg/config/config.go	95.21% <ø> (ø)
internal/pipe/ko/ko.go	89.18% <100.00%> (+1.91%)	⬆️

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[maxbrunet]

@caarlos0 I added creation times too, let me know if it is ok with you 🙂

[caarlos0]

Thank you!