kro-push-images: set build-dir

[justinsb]

We want to build from the root, but cloudbuild.yaml is in a subdir.

[jakobmoellerdev]

/lgtm

[k8s-ci-robot]

@jakobmoellerdev: changing LGTM is restricted to collaborators

In response to this:

/lgtm

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[a-hilaly]

/lgtm

[a-hilaly]

/cc @hakman @ameukam

[hakman]

/approve

[a-hilaly]

/cc @BenTheElder

[a-hilaly]

/cc @dims

[dims]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-hilaly, dims, hakman, jakobmoellerdev, justinsb

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• config/jobs/image-pushing/OWNERS [dims]

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[k8s-ci-robot]

@justinsb: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key k8s-staging-kro.yaml using file config/jobs/image-pushing/k8s-staging-kro.yaml

In response to this:

We want to build from the root, but cloudbuild.yaml is in a subdir.

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-sigs/prow repository.