We found a Contributor License Agreement for you (the sender of this pull request), but were unable to find agreements for all the commit author(s) or Co-authors. If you authored these, maybe you used a different email address in the git commits than was used to sign the CLA (login here to double check)? If these were authored by someone else, then they will need to sign a CLA as well, and confirm that they're okay with these being contributed to Google.
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It's wired I can't sign the cla here because I had already signed the cla in knative/serving,

I signed it!

@mattmoor I can't pass the cla check, so just leave it as a reminder to optimize the dockerfile, and close this pr after it had been improved.

@lvjing2 perhaps change the commit author locally and git commit --amend?

/ok-to-test

CLAs look good, thanks!

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lvjing2, mattmoor

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