Build release images.

Makefile

@@ -3,13 +3,14 @@ RELEASE_VER=v0.3
 REPO_PATH=github.com/kubernetes-sigs/kube-batch
 GitSHA=`git rev-parse HEAD`
 Date=`date "+%Y-%m-%d %H:%M:%S"`
+REL_OSARCH="linux/amd64"
+LD_FLAGS=" \
+    -X '${REPO_PATH}/pkg/version.GitSHA=${GitSHA}' \
+    -X '${REPO_PATH}/pkg/version.Built=${Date}'   \
+    -X '${REPO_PATH}/pkg/version.Version=${RELEASE_VER}'"
 
 kube-batch: init
-	go build  -ldflags " \
-	-X '${REPO_PATH}/pkg/version.GitSHA=${GitSHA}' \
-	-X '${REPO_PATH}/pkg/version.Built=${Date}'   \
-	-X '${REPO_PATH}/pkg/version.Version=${RELEASE_VER}'" \
-	-o _output/bin/kube-batch ./cmd/kube-batch
+	go build -ldflags ${LD_FLAGS} -o=${BIN_DIR}/kube-batch ./cmd/kube-batch
 
 verify: generate-code
 	hack/verify-gofmt.sh
@@ -23,8 +24,13 @@ generate-code:
 	go build -o ${BIN_DIR}/deepcopy-gen ./cmd/deepcopy-gen/
 	${BIN_DIR}/deepcopy-gen -i ./pkg/apis/scheduling/v1alpha1/ -O zz_generated.deepcopy
 
-images: kube-batch
-	cp ./_output/bin/kube-batch ./deployment/images/
+rel_bins:
+	go get github.com/mitchellh/gox
+	gox -osarch=${REL_OSARCH} -ldflags ${LD_FLAGS} \
+	-output=${BIN_DIR}/{{.OS}}/{{.Arch}}/kube-batch ./cmd/kube-batch
+
+images: rel_bins
+	cp ./_output/bin/${REL_OSARCH}/kube-batch ./deployment/images/
 	docker build ./deployment/images -t kubesigs/kube-batch:${RELEASE_VER}
 	rm -f ./deployment/images/kube-batch