Add a script for downloading official binaries

Author: luxas

Diff for: .gitignore

@@ -1,2 +1,3 @@
 addons/images/bin
 scripts/cross-compile-k8s/bin
+scripts/download-official-binaries/bin

Diff for: scripts/download-official-binaries/Makefile

@@ -0,0 +1,28 @@
+ARCH?=arm
+OUTPUT?=$(shell pwd)/bin/$(ARCH)
+TMPDIR:=$(shell mktemp -d)
+
+ETCD_VERSION = 2.2.5
+FLANNEL_VERSION = 0.5.5
+K8S_VERSION = v1.3.0
+
+all: compress
+compress: etcd flanneld kube
+	cd $(TMPDIR)/bin && tar -czf $(OUTPUT)/kube-$(K8S_VERSION)-$(ARCH).tar.gz .
+
+etcd: dirs
+	docker export $(shell docker create gcr.io/google_containers/etcd-$(ARCH):2.2.5) | tar -x -C $(TMPDIR)/etcd
+	cp $(TMPDIR)/etcd/usr/local/bin/etcd $(TMPDIR)/etcd/usr/local/bin/etcdctl $(TMPDIR)/bin/
+
+flanneld: dirs
+	docker export $(shell docker create gcr.io/google_containers/flannel-$(ARCH):0.5.5) | tar -x -C $(TMPDIR)/flannel
+	cp $(TMPDIR)/flannel/opt/bin/flanneld $(TMPDIR)/bin/
+
+kube: dirs
+	curl -sSL https://storage.googleapis.com/kubernetes-release/release/$(K8S_VERSION)/bin/linux/$(ARCH)/kubectl > $(TMPDIR)/bin/kubectl
+	curl -sSL https://storage.googleapis.com/kubernetes-release/release/$(K8S_VERSION)/bin/linux/$(ARCH)/hyperkube > $(TMPDIR)/bin/hyperkube
+	curl -sSL https://storage.googleapis.com/kubernetes-release/release/$(K8S_VERSION)/bin/linux/$(ARCH)/e2e.test > $(TMPDIR)/bin/e2e.test
+	curl -sSL https://storage.googleapis.com/kubernetes-release/release/$(K8S_VERSION)/bin/linux/$(ARCH)/e2e_node.test > $(TMPDIR)/bin/e2e_node.test
+
+dirs:
+	mkdir -p $(TMPDIR)/flannel $(TMPDIR)/etcd $(TMPDIR)/bin $(OUTPUT)