Change:
cross-build , Supported arch are: amd64(default) arm arm64 ppc64le PR is . This issue and PR() is an effort to achieve multiarch Kubernetes()
Done.

Discussion:
# See the License for the specific language governing permissions and # limitations under the License. <del> FROM busybox </del> <ins> FROM BASEIMAGE </ins> MAINTAINER Tim Hockin <thockin@google.com> ADD serve_hostname /serve_hostname <del> ADD serve_hostname.go /serve_hostname.go </del> EXPOSE 9376 ENTRYPOINT ["/serve_hostname"]

# See the License for the specific language governing permissions and # limitations under the License. <del> all: serve_hostname </del> <ins> # Cross-build the serve_hostname image # # Usage: #       [TAG=v1.5] [PREFIX=gcr.io/google_containers] [TEST_REGISTRY=b.gcr.io/k8s_authenticated_test] [ARCH=amd64] [BASEIMAGE=busybox] make all .PHONY: all push container clean TAG ?= v1.5 REGISTRY ?= gcr.io/google_containers TEST_REGISTRY ?= b.gcr.io/k8s_authenticated_test # Architectures supported: amd64, arm, arm64 and ppc64le ARCH ?= amd64 ALL_ARCH = amd64 arm arm64 ppc64le GOARM=6 TEMP_DIR := $(shell mktemp -d) GOLANG_VERSION = 1.6.3 BIN = serve_hostname SRCS = serve_hostname.go IMAGE = $(REGISTRY)/$(BIN)-$(ARCH) TEST_IMAGE = $(TEST_REGISTRY)/$(BIN)-$(ARCH) </ins> <del> TAG = v1.4 PREFIX = gcr.io/google_containers TEST_PREFIX = b.gcr.io/k8s_authenticated_test </del> <ins> # Set default base image dynamically for each arch ifeq ($(ARCH),amd64) BASEIMAGE?=busybox endif ifeq ($(ARCH),arm) BASEIMAGE?=armel/busybox endif ifeq ($(ARCH),arm64) BASEIMAGE?=aarch64/busybox endif ifeq ($(ARCH),ppc64le) BASEIMAGE?=ppc64le/busybox endif </ins> <del> serve_hostname: serve_hostname.go CGO_ENABLED=0 go build -a -installsuffix cgo --ldflags '-w' ./serve_hostname.go </del> <ins> # If you want to build AND push all containers, see the 'all-push' rule. all: all-container </ins> <del> container: serve_hostname docker build -t $(PREFIX)/serve_hostname:$(TAG) . if [ -n "$(TEST_PREFIX)" ]; then  docker tag -f $(PREFIX)/serve_hostname:$(TAG) $(TEST_PREFIX)/serve_hostname:$(TAG);  </del> <ins> sub-container-%: $(MAKE) ARCH=$* container sub-push-%: $(MAKE) ARCH=$* push all-container: $(addprefix sub-container-,$(ALL_ARCH)) all-push: $(addprefix sub-push-,$(ALL_ARCH)) build: bin/$(BIN)-$(ARCH) bin/$(BIN)-$(ARCH): $(SRCS) # Copy the content in this dir to the temp dir cp ./* $(TEMP_DIR) docker run -it -v $(TEMP_DIR):/build  golang:$(GOLANG_VERSION)  /bin/bash -c " cd /build &&  CGO_ENABLED=0 GOARM=$(GOARM) GOARCH=$(ARCH) go build -a -installsuffix cgo --ldflags '-w' -o $(BIN) ./$(SRCS)" container: .container-$(ARCH) .container-$(ARCH): bin/$(BIN)-$(ARCH) # Set the base image cd $(TEMP_DIR) && sed -i.bak 's|BASEIMAGE|$(BASEIMAGE)|g' Dockerfile docker build -t $(IMAGE):$(TAG) $(TEMP_DIR) if [ -n "$(TEST_REGISTRY)" ]; then  docker tag $(IMAGE):$(TAG) $(TEST_IMAGE):$(TAG) ; </ins> fi <del> push: gcloud docker push $(PREFIX)/serve_hostname:$(TAG) if [ -n "$(TEST_PREFIX)" ]; then  gcloud docker push $(TEST_PREFIX)/serve_hostname:$(TAG);  </del> <ins> push: .push-$(ARCH) .push-$(ARCH): .container-$(ARCH) gcloud docker push $(IMAGE):$(TAG) if [ -n "$(TEST_REGISTRY)" ]; then  gcloud docker push $(TEST_IMAGE):$(TAG) ; </ins> fi clean: <del> rm -f serve_hostname </del> <ins> rm -rf $(BIN) </ins>

<del> serve_hostname ============== </del> <ins> ## serve_hostname </ins> <del> Util app to serve your hostname on TCP and/or UDP.  Useful for testing. </del> <ins> This is a small util app to serve your hostname on TCP and/or UDP.  Useful for testing. The `serve_hostname` Makefile supports multiple architectures, which means it may cross-compile and build an docker image easily. Arch-specific busybox images serve as base images. If you are releasing a new version, please bump the `TAG` value in the `Makefile` before building the images. ## How to release: ``` # Build cross-platform binaries $ make all-push # Build for linux/amd64 (default) $ make push ARCH=amd64 # ---> gcr.io/google_containers/serve_hostname-amd64:TAG $ make push ARCH=arm # ---> gcr.io/google_containers/serve_hostname-arm:TAG $ make push ARCH=arm64 # ---> gcr.io/google_containers/serve_hostname-arm64:TAG $ make push ARCH=ppc64le # ---> gcr.io/google_containers/serve_hostname-ppc64le:TAG ``` Of course, if you don't want to push the images, run `make all-container` or `make container ARCH={target_arch}` instead. </ins> [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/contrib/for-demos/serve_hostname/README.md?pixel)]()