Docker build optimization

[guimou]

This introduces a breaking change

• Yes
• [X ] No

This Pull Request implements

Add cleaning instructions after yum update in the Dockerfile(s) to gain size on images.
Gain is not that important, image size for ubi8-py38 is 1.1GB vs 1.11GB without it, but it's best practice in general.

Description

Simply added instructions after the yum update.
yum --assumeyes clean all &&
rm -rf /var/cache/yum

[sesheta]

Hi @guimou. Thanks for your PR.

I'm waiting for a thoth-station member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[harshad16]

/ok-to-test
This is great, thanks 💯

[sesheta]

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

/close

[sesheta]

@sesheta: Closed this PR.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[goern]

why havent we merged this?!

/approve

thanks @guimou

[sesheta]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: goern

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