setup automated builds using the release-tools

Use the steps at below link to setup automated builds via
release-tools.

https://github.com/kubernetes-csi/csi-release-tools

- add release-tools via git subtree
- update Makefile to use the release-tools/make
- add cloudbuild links from release-tools
- update Dockerfile that can be used for multi-arch by release tools

Signed-off-by: kmova <kiran.mova@mayadata.io>

.cloudbuild.sh

@@ -0,0 +1 @@
+./release-tools/cloudbuild.sh

Dockerfile

@@ -0,0 +1,22 @@
+# Copyright 2017-2020 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.
+
+FROM alpine
+LABEL maintainers="Kubernetes Authors"
+LABEL description="NFS subdir external provisioner"
+ARG binary=./bin/nfs-subdir-external-provisioner
+
+RUN apk update --no-cache && apk add ca-certificates
+COPY ${binary} /nfs-subdir-external-provisioner
+ENTRYPOINT ["/nfs-subdir-external-provisioner"]

Makefile

@@ -12,38 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ifeq ($(REGISTRY),)
-        REGISTRY = quay.io/external_storage/
-endif
-ifeq ($(VERSION),)
-        VERSION = latest
-endif
-IMAGE = $(REGISTRY)nfs-subdir-external-provisioner:$(VERSION)
-IMAGE_ARM = $(REGISTRY)nfs-subdir-external-provisioner-arm:$(VERSION) 
-MUTABLE_IMAGE = $(REGISTRY)nfs-subdir-external-provisioner:latest
-MUTABLE_IMAGE_ARM = $(REGISTRY)nfs-subdir-external-provisioner-arm:latest
+CMDS=nfs-subdir-external-provisioner
+all: build
 
-all: build image build_arm image_arm 
+include release-tools/build.make
 
-container: build image build_arm image_arm
-
-build:
-	CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o docker/x86_64/nfs-subdir-external-provisioner ./cmd/nfs-subdir-external-provisioner
-
-build_arm:
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -a -ldflags '-extldflags "-static"' -o docker/arm/nfs-subdir-external-provisioner ./cmd/nfs-subdir-external-provisioner 
-
-image:
-	docker build -t $(MUTABLE_IMAGE) docker/x86_64
-	docker tag $(MUTABLE_IMAGE) $(IMAGE)
-
-image_arm:
-	docker run --rm --privileged multiarch/qemu-user-static:register --reset
-	docker build -t $(MUTABLE_IMAGE_ARM) docker/arm
-	docker tag $(MUTABLE_IMAGE_ARM) $(IMAGE_ARM)
-
-push:
-	docker push $(IMAGE)
-	docker push $(MUTABLE_IMAGE)
-	docker push $(IMAGE_ARM)
-	docker push $(MUTABLE_IMAGE_ARM)
+BUILD_PLATFORMS=linux amd64; linux arm64 -arm64; linux ppc64le -ppc64le; linux s390x -s390x

README.md

@@ -6,9 +6,11 @@ Note: This repository is being migrated from https://github.com/kubernetes-incub
 
 ```sh
 make build
-# Set a custom image registry to push the container image
-# Example REGISTRY="quay.io/myorg"
-make image
+make container
+# `nfs-subdir-external-provisioner:latest` will be created. 
+# To upload this to your customer registry, say `quay.io/myorg`, you can use
+# docker tag nfs-subdir-external-provisioner:latest quay.io/myorg/nfs-subdir-external-provisioner:latest
+# docker push quay.io/myorg/nfs-subdir-external-provisioner:latest
 ```
 
 ## How to deploy nfs-client to your cluster

cloudbuild.yaml

@@ -0,0 +1 @@
+./release-tools/cloudbuild.yaml

go.sum

@@ -151,6 +151,7 @@ github.com/heketi/tests v0.0.0-20151005000721-f3775cbcefd6/go.mod h1:xGMAM8JLi7U
 github.com/heketi/utils v0.0.0-20170317161834-435bc5bdfa64/go.mod h1:RYlF4ghFZPPmk2TC5REt5OFwvfb6lzxFWrTWB+qs28s=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/imdario/mergo v0.3.5 h1:JboBksRwiiAJWvIYJVo46AfV+IAIKZpfrSzVKj42R4Q=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=