[release-v1.21] Align image dockerfiles

[dsimansk]

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@dsimansk: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/420-test-e2e	ac335d6	link	true	/test 420-test-e2e
ci/prow/420-images	ac335d6	link	true	/test 420-images

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