I have already done a preliminary review for you, and I hope to help you do a better job.

Based on the pull request title and description, the changes in this PR involve fixing a bug where output file parts were being overridden.

The diff shows that the change is made to two files, check-images-internal.sh and check-tiup.sh. In both files, there was a line that initialized the results file with : >results.yaml. This line was changed to use the yq command to add an empty object to the images and tiup fields respectively, so that the existing content of the output file is not overridden.

There are no potential problems that are immediately apparent in this PR.

As for fixing suggestions, it would be good to add a brief explanation in the pull request description of why the yq command is used instead of simply removing the : >results.yaml line. Additionally, it might be helpful to include a test plan for how this change will be tested to ensure that the fix works as intended.

/approve

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wuhuizuo

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