fix(dockerfiles/bases): shrink base image size

[wuhuizuo]

add clean step to rmove /var/cache/yum.

Signed-off-by: wuhuizuo wuhuizuo@126.com

[ti-chi-bot]

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

Based on the pull request's title and description, it looks like the main change is to shrink the base image size by adding a clean step to remove /var/cache/yum in several Dockerfiles. The changes have been made to multiple files in the dockerfiles/bases directory.

Overall, the changes look good and should help reduce the size of the Docker images. However, there are a few potential problems that should be addressed:

• The rm -rf /var/cache/yum command may not work as expected if the directory does not exist or if the user running the command does not have sufficient permissions. A safer approach would be to use yum clean all to clear the cache.
• It's unclear why some of the Dockerfiles are pinned to specific dates (_date=20240919). This may cause issues in the future if the packages are updated and the base image is rebuilt.
• The changes to the skaffold.yaml file seem unrelated to the main change in this pull request. It may be better to create a separate pull request for those changes.

To address these potential problems, I suggest the following changes:

• Replace rm -rf /var/cache/yum with yum clean all in all the affected Dockerfiles.
• Remove the _date variable and let dnf upgrade use the latest packages.
• Create a separate pull request for the changes to skaffold.yaml.

Once these changes have been made, the pull request should be ready to merge.

[wuhuizuo]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wuhuizuo

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[wuhuizuo]

It seems not reduce the image total size. I will revert it.