feat: support multiple registry mirrors with fallback #1498
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Fixes #1473
Description
The initial implementation of the registry mirror only allowed a single mirror, and if pulling from the mirror failed, the build would fail.
This change introduces:
This is the same behavior as the docker daemon and will allow using a registry mirror such as
mirror.gcr.io
which is incomplete and doesn't have all the content that the default registry on docker.io has.Note that there are no changes in the CLI flags, the
--registry-mirror
flag is still valid. But now it can be used multiple times to set up more than one registry mirror.Submitter Checklist
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Reviewer Notes
Release Notes
Describe any changes here so maintainer can include it in the release notes, or delete this block.