update go-containerregistry so that kaniko works with Harbor

[everpeace]

Hi! Thanks for maintaining the great project!

Recently, I confirmed current version of kaniko doesn't work well with Harbor as I stated two issues below:

• Use kaniko with docker config.json password #129 (comment)
• cross-repo blob mount should be used only when the layer comes from the same registry google/go-containerregistry#219

After my research, I understand the reason might be harbor's implementation. However, my workaround(google/go-containerregistry#219) was merged in go-containerregistry to make go-containerregistry more robust on various docker container registry implementations even when some implementations doesn't follow the docker registry specs. Also, another issue(google/go-containerregistry#220) reported that exactly the same error happens in gitlab.

So, I would like kaniko to pull the change so that kaniko works nicely with private docker registry implementations (at least with harbor, gitlab).

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[googlebot]

CLAs look good, thanks!

[priyawadhwa]

Hey @everpeace, since this is a change to go-containerregistry, you'll have to submit this change in that repo first and then we can vendor in the changes.

Edit: Whoops just realized that's exactly what you did (sorry, somehow I must have not fully read the PR description!)

[priyawadhwa]

Thanks so much for contributing!

[everpeace]

@priyawadhwa Thanks for merging this! Would you mind me telling when gcr.io/kaniko-project/executor:{latest, debug} will be updated??

I expected those images were updated after this PR being merged. But it seems not.