Skaffold ignore registryMirror for ONBUILD

[gawsoftpl]

Expected behavior

Calc hash for ONBUILD multisteps docker image using registry proxy server not

Actual behavior

Skaffold calc docker image hash for multisteps docker image only from index.docker.com. Skaffold ignore registryMirror setup for kaniko.

I have setup SKAFFOLD_CACHE_ARTIFACTS but this ignore proxy too

Information

• Skaffold version: 2.6.3
• Operating system: ubuntu 22

Error from log

parsing ONBUILD instructions: retrieving image \"alpine/git\": GET https://index.docker.io/v2/alpine/git/manifests/latest: TOOMANYREQUESTS: You have reached your pull rate limit. You may increase the limit by authenticating and upgrading: https://www.docker.com/increase-rate-limit" subtask=docs task=Build

[gawsoftpl]

I think this is a issue in dependency: google/go-containerregistry#1200

[ericzzzzzzz]

Thank you! I was just looking for the same thing, this is the issue #7368 filed before.