Build node images with cloud build

Co-authored-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>
Co-authored-by: Matthew Booth <mbooth@redhat.com>
Signed-off-by: Lennart Jern <lennart.jern@est.tech>

osimages/Makefile

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+# Copyright 2023 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# 	http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+REPO_ROOT = $(shell git rev-parse --show-toplevel)
+
+ARTIFACTS ?= $(REPO_ROOT)/_artifacts
+OSIMAGE_DIR ?= $(ARTIFACTS)/osimages
+OSIMAGE_BUILDER ?= registry.k8s.io/scl-image-builder/cluster-node-image-builder-amd64:v0.1.20
+STAGING_BUCKET ?= artifacts.k8s-staging-capi-openstack.appspot.com
+
+DISTROS ?= ubuntu-2204 flatcar
+KUBERNETES_VERSIONS ?= 1.28.2 1.27.2
+
+# By default, build all distros with all kubernetes versions
+all_targets := $(foreach distro,$(DISTROS),$(addprefix osimage-$(distro)-,$(KUBERNETES_VERSIONS)))
+all: $(all_targets)
+
+# Set this to 'none' if kvm is not available
+ACCELERATOR ?= kvm
+
+ifeq ($(ACCELERATOR),kvm)
+	privileged=--privileged
+else
+	privileged=
+endif
+
+$(OSIMAGE_DIR):
+	mkdir -p $(OSIMAGE_DIR)
+
+.PHONY: osimage
+osimage: DISTRO ?= ubuntu-2204
+osimage: KUBERNETES_VERSION ?= v1.28.2
+# KUBERNETES_SERIES default to vX.Y from KUBERNETES_VERSION
+osimage: KUBERNETES_SERIES ?= $(shell echo $(KUBERNETES_VERSION) | sed 's/\(v[0-9]\+\.[0-9]\+\).[0-9]\+/\1/;tx;q1;:x')
+osimage: | $(OSIMAGE_DIR)
+	docker run --rm $(privileged) \
+		--network=host \
+		-v "$(OSIMAGE_DIR):/output" \
+		-e PACKER_LOG=1 \
+		-e PACKER_FLAGS=" \
+		    --var 'boot_wait=300s' \
+		    --var 'accelerator=$(ACCELERATOR)' \
+		    --var 'kubernetes_semver=$(KUBERNETES_VERSION)' \
+		    --var 'kubernetes_series=$(KUBERNETES_SERIES)' \
+		" \
+		-e OEM_ID=openstack \
+		$(OSIMAGE_BUILDER) build-qemu-$(DISTRO)
+
+# Build a specific image, determined by the name of the target
+# e.g. osimage-flatcar-1.26.2 -> DISTRO=flatcar, KUBERNETES_VERSION=v1.26.2
+osimage-%: DISTRO=$(shell echo $@ | sed 's/osimage-\(.*\)-\([^-]*\)/\1/')
+osimage-%: KUBERNETES_VERSION=v$(shell echo $@ | sed 's/osimage-\(.*\)-\([^-]*\)/\2/')
+osimage-%: FORCE
+	$(MAKE) osimage DISTRO=$(DISTRO) KUBERNETES_VERSION=$(KUBERNETES_VERSION)
+
+.PHONY: FORCE
+FORCE:
+
+.PHONY: osimage-upload:
+osimage-upload:
+	ls $(OSIMAGE_DIR)
+	gsutil cp $(OSIMAGE_DIR)/* gs://$(STAGING_BUCKET)/test

osimages/cloudbuild-osimages.yaml

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+# See https://cloud.google.com/cloud-build/docs/build-config
+timeout: 7200s
+options:
+  substitution_option: ALLOW_LOOSE
+  machineType: 'N1_HIGHCPU_32'
+steps:
+  - name: 'docker'
+    script: |
+      apk add --update bash git make
+      cd ./osimages
+      make -j2 ACCELERATOR=none \
+        osimage-flatcar-1.27.2 \
+        osimage-flatcar-1.28.2 \
+        osimage-ubuntu-2204-1.28.2 \
+        osimage-ubuntu-2204-1.27.2
+    id: 'make'
+  - name: 'gcr.io/k8s-staging-test-infra/gcb-docker-gcloud:latest'
+    waitFor: ['make']
+    script: |
+      cd ./osimages
+      make osimage-upload