Only add gcr.io images to publish results

[afrittoli]

Changes

The release process generates and number of container images and
publishes them to gcr.io as well as three regional versions of the
registry. Today all those images are added to the IMAGES result,
for signing by chains, however that causes the nightly build to
fail as we hit the termination message size limit.

Until we have a way to store larger results, we shall only sign
images on gcr.io as a workaround.

Workaround to #4282

Signed-off-by: Andrea Frittoli andrea.frittoli@uk.ibm.com

/kind misc

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Release Notes

Due to a technical limitation, only images published to `gcr.io`, which are included in the `release.yaml`, are signed.
Images on `eu.gcr.io`, `us.gcr.io` and `asia.gcr.io` are not signed yet.

[vdemeester]

Could we "split" the result into multiple bucket (that we know of) ? Like the main one, asia, europe, … ?

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[afrittoli]

Could we "split" the result into multiple bucket (that we know of) ? Like the main one, asia, europe, … ?

We could, however in my understanding we would need to run one Task per bucket then.
AFAIU the size limit applies the collection of results, so event having more results in one Task would not help.
Chains only supports one IMAGES list result and many individual ones. We could add support having multiple lists, but again that would not help with the size limitation.

[pritidesai]

/lgtm

would it be overkill to run publish task one per region? 😲

[pritidesai]

I would like to cherry pick this in v0.28.x. I believe there is no need to create a separate patch since this is something consumed by the dogfooding cluster and not user facing. I have updated the definition on the dogfooding cluster while creating v0.28.2 after cherry picking this change.