add cloudbuild

Change-Id: Ib6a89c7c2f88dd3fbfa526a1458e8cb58ab356f0

Makefile

@@ -30,17 +30,31 @@ lint:
 update:
 	go mod tidy && go mod vendor
 
+
 # get image name from directory we're building
 IMAGE_NAME=cloud-provider-kind
 # docker image registry, default to upstream
 REGISTRY?=gcr.io/k8s-staging-kind
 # tag based on date-sha
 TAG?=$(shell echo "$$(date +v%Y%m%d)-$$(git describe --always --dirty)")
 # the full image tag
-IMAGE?=$(REGISTRY)/$(IMAGE_NAME):$(TAG)
+CPK_IMAGE?=$(REGISTRY)/$(IMAGE_NAME):$(TAG)
+PLATFORMS?=linux/amd64,linux/arm64
+
+.PHONY: ensure-buildx
+ensure-buildx:
+	./hack/init-buildx.sh
 
-# required to enable buildx
-export DOCKER_CLI_EXPERIMENTAL=enabled
 image-build:
-# docker buildx build --platform=${PLATFORMS} $(OUTPUT) --progress=$(PROGRESS) -t ${IMAGE} --pull $(EXTRA_BUILD_OPT) .
-	docker build . -t ${IMAGE}
+	docker buildx build . \
+		--tag="${CPK_IMAGE}" \
+		--load
+
+image-push:
+	docker buildx build . \
+		--platform="${PLATFORMS}" \
+		--tag="${CPK_IMAGE}" \
+		--push
+
+.PHONY: release # Build a multi-arch docker image
+release: ensure-buildx image-push

cloudbuild.yaml

@@ -0,0 +1,11 @@
+# See https://cloud.google.com/cloud-build/docs/build-config
+options:
+  substitution_option: ALLOW_LOOSE
+  machineType: E2_HIGHCPU_32
+steps:
+- name: gcr.io/k8s-staging-test-infra/gcb-docker-gcloud:v20240718-5ef92b5c36
+  entrypoint: make
+  env:
+  - REGISTRY=gcr.io/k8s-staging-kind
+  - IMAGE_NAME=cloud-provider-kind
+  args: ['release']

hack/init-buildx.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Copyright 2020 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.
+
+set -o errexit -o nounset -o pipefail
+
+# We can skip setup if the current builder already has multi-arch
+# AND if it isn't the docker driver, which doesn't work
+current_builder="$(docker buildx inspect)"
+# linux/amd64, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6
+if ! grep -q "^Driver: docker$" <<<"${current_builder}" && \
+     grep -q "linux/amd64" <<<"${current_builder}" && \
+     grep -q "linux/arm64" <<<"${current_builder}"; then
+  exit 0
+fi
+
+# Ensure qemu is in binfmt_misc
+# Docker desktop already has these in versions recent enough to have buildx
+# We only need to do this setup on linux hosts
+if [ "$(uname)" == 'Linux' ]; then
+  # NOTE: this is pinned to a digest for a reason!
+  docker run --rm --privileged tonistiigi/binfmt:qemu-v7.0.0-28@sha256:66e11bea77a5ea9d6f0fe79b57cd2b189b5d15b93a2bdb925be22949232e4e55 --install all
+fi
+
+# Ensure we use a builder that can leverage it (the default on linux will not)
+docker buildx rm knp-builder || true
+docker buildx create --use --name=knp-builder