Refactor build of docker images

images/e2e-prow/Makefile

@@ -1,3 +1,17 @@
+# Copyright 2018 The Kubernetes Authors. All rights reserved.
+#
+# 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.
+
 TAG ?=v$(shell date +%m%d%Y)-$(shell git rev-parse --short HEAD)
 REGISTRY ?= quay.io/kubernetes-ingress-controller
 
@@ -5,13 +19,8 @@ IMAGE = $(REGISTRY)/e2e-prow
 
 .PHONY: image
 image:
-	docker buildx build \
-		--pull \
-		--push \
-		--progress plain \
-		--platform amd64 \
+	docker build \
 		--build-arg K8S_RELEASE=v1.17.0 \
-		--build-arg ETCD_VERSION=v3.3.18 \
 		--build-arg KIND_VERSION=v0.8.0 \
 		--build-arg GO_VERSION=1.14.2 \
-		-t $(IMAGE):$(TAG) .
+		-t $(IMAGE):$(TAG) rootfs

images/e2e-prow/rootfs/Dockerfile

@@ -16,6 +16,9 @@
 # unit and integration tests
 
 FROM gcr.io/k8s-testimages/bootstrap
+FROM k8s.gcr.io/etcd:3.4.3-0 as etcd
+
+COPY --from=etcd /usr/local/bin/etcd /usr/local/bin/etcd
 
 # hint to kubetest that it is in CI
 ENV KUBETEST_IN_DOCKER="true"
@@ -43,7 +46,6 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/*
 
 ARG K8S_RELEASE
-ARG ETCD_VERSION
 ARG KIND_VERSION
 ARG GO_VERSION
 
@@ -53,12 +55,6 @@ RUN curl -sSL https://storage.googleapis.com/kubernetes-release/release/${K8S_RE
 RUN curl -sSL https://storage.googleapis.com/kubernetes-release/release/${K8S_RELEASE}/bin/linux/amd64/kube-apiserver -o /usr/local/bin/kube-apiserver \
     && chmod +x /usr/local/bin/kube-apiserver
 
-RUN curl -sSL https://storage.googleapis.com/etcd/${ETCD_VERSION}/etcd-${ETCD_VERSION}-linux-amd64.tar.gz -o /tmp/etcd-${ETCD_VERSION}-linux-amd64.tar.gz \
-    && mkdir -p /tmp/etcd-download \
-    && tar xzvf /tmp/etcd-${ETCD_VERSION}-linux-amd64.tar.gz -C /tmp/etcd-download --strip-components=1 \
-    && cp /tmp/etcd-download/etcd /usr/local/bin \
-    && rm -rf /tmp/etcd-download
-
 RUN curl -sSL https://github.com/kubernetes-sigs/kind/releases/download/${KIND_VERSION}/kind-linux-amd64 -o /usr/local/bin/kind \
     && chmod +x /usr/local/bin/kind