Add index image

[slintes]

For easier testing of upstream builds.

The releated commit is on top of PR #73, DO NOT MERGE BEFORE!

/hold
/wip

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@slintes: The following test 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/e2e	2e9a117	link	true	/test e2e

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