Add cloudbuild-nightly.yaml + release-staging-nightly target

Makefile

@@ -445,6 +445,26 @@ RELEASE_ALIAS_TAG=$(PULL_BASE_REF)
 release-alias-tag: # Adds the tag to the last build tag.
 	gcloud container images add-tag $(CONTROLLER_IMG):$(TAG) $(CONTROLLER_IMG):$(RELEASE_ALIAS_TAG)
 
+.PHONY: release-staging-nightly
+release-staging-nightly:
+	# Tags and pushes nightly container images to the staging bucket.
+	# Invoked via cloudbuild-nightly.yaml by image-builder launched via the configured nightly periodic job.
+	$(eval NEW_RELEASE_ALIAS_TAG := nightly_$(RELEASE_ALIAS_TAG)_$(shell date +'%Y%m%d'))
+	echo $(NEW_RELEASE_ALIAS_TAG)
+	$(MAKE) release-alias-tag TAG=$(RELEASE_ALIAS_TAG) RELEASE_ALIAS_TAG=$(NEW_RELEASE_ALIAS_TAG)
+	$(MAKE) set-manifest-image MANIFEST_IMG=$(CONTROLLER_IMG) MANIFEST_TAG=$(NEW_RELEASE_ALIAS_TAG)
+	$(MAKE) set-manifest-pull-policy PULL_POLICY=IfNotPresent
+	$(MAKE) release-manifests
+	$(MAKE) release-metadata
+	$(MAKE) release-templates
+	$(MAKE) upload-staging-artifacts RELEASE_ALIAS_TAG=$(NEW_RELEASE_ALIAS_TAG)
+
+.PHONY: upload-staging-artifacts
+upload-staging-artifacts: ## Upload release artifacts to the staging bucket
+	# Example manifest location: https://storage.googleapis.com/k8s-staging-cluster-api-aws/components/nightly_main_20240425/infrastructure-components.yaml
+	# Please note that these files are deleted after a certain period, at the time of this writing 60 days after file creation.
+	gsutil cp $(RELEASE_DIR)/* gs://$(BUCKET)/components/$(RELEASE_ALIAS_TAG)
+
 .PHONY: release-notes
 release-notes: $(RELEASE_NOTES)
 	$(RELEASE_NOTES)

cloudbuild-nightly.yaml

@@ -0,0 +1,18 @@
+# See https://cloud.google.com/cloud-build/docs/build-config
+timeout: 3600s
+options:
+  substitution_option: ALLOW_LOOSE
+steps:
+  - name: 'gcr.io/k8s-staging-test-infra/gcb-docker-gcloud:v20240210-29014a6e3a'
+    entrypoint: make
+    env:
+    - DOCKER_CLI_EXPERIMENTAL=enabled
+    - TAG=$_GIT_TAG
+    - PULL_BASE_REF=$_PULL_BASE_REF
+    args:
+    - release-staging-nightly
+substitutions:
+  # _GIT_TAG will be filled with a git-based tag for the image, of the form vYYYYMMDD-hash, and
+  # can be used as a substitution
+  _GIT_TAG: '12345'
+  _PULL_BASE_REF: 'dev'

cloudbuild.yaml

@@ -3,7 +3,7 @@ timeout: 3600s
 options:
   substitution_option: ALLOW_LOOSE
 steps:
-  - name: 'gcr.io/k8s-staging-test-infra/gcb-docker-gcloud:v20220609-2e4c91eb7e'
+  - name: 'gcr.io/k8s-staging-test-infra/gcb-docker-gcloud:v20240210-29014a6e3a'
     entrypoint: make
     env:
     - DOCKER_CLI_EXPERIMENTAL=enabled