Upgrade to Golang 1.20.4 (#10016)

* Upgrade to Golang 1.20.4 and alpine 3.18.0

* Handle Review comments

images/custom-error-pages/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.20.1-alpine3.17 as builder
+FROM golang:1.20.4-alpine3.18 as builder
 
 RUN apk update \
     && apk upgrade && apk add git

images/ext-auth-example-authsvc/rootfs/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.1-alpine3.17 as builder
+FROM golang:1.20.4-alpine3.18 as builder
 RUN mkdir /authsvc
 WORKDIR /authsvc
 COPY . ./

images/fastcgi-helloserver/rootfs/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.20.1-alpine3.17 as builder
+FROM golang:1.20.4-alpine3.18 as builder
 
 WORKDIR /go/src/k8s.io/ingress-nginx/images/fastcgi
 

images/go-grpc-greeter-server/rootfs/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.1-alpine3.17 as build
+FROM golang:1.20.4-alpine3.18 as build
 
 WORKDIR /go/src/greeter-server
 

images/test-runner/Makefile

@@ -43,7 +43,7 @@ image:
 		--pull \
 		--push \
 		--build-arg BASE_IMAGE=${NGINX_BASE_IMAGE} \
-		--build-arg GOLANG_VERSION=1.20.1 \
+		--build-arg GOLANG_VERSION=1.20.4 \
 		--build-arg ETCD_VERSION=3.4.3-0 \
 		--build-arg K8S_RELEASE=v1.26.0 \
 		--build-arg RESTY_CLI_VERSION=0.27 \
@@ -64,7 +64,7 @@ build: ensure-buildx
 		--progress=${PROGRESS} \
 		--pull \
 		--build-arg BASE_IMAGE=${NGINX_BASE_IMAGE} \
-		--build-arg GOLANG_VERSION=1.20.1 \
+		--build-arg GOLANG_VERSION=1.20.4 \
 		--build-arg ETCD_VERSION=3.4.3-0 \
 		--build-arg K8S_RELEASE=v1.26.0 \
 		--build-arg RESTY_CLI_VERSION=0.27 \

images/test-runner/rootfs/Dockerfile

@@ -15,7 +15,7 @@ ARG BASE_IMAGE
 ARG GOLANG_VERSION
 ARG ETCD_VERSION
 
-FROM golang:${GOLANG_VERSION}-alpine3.17 as GO
+FROM golang:${GOLANG_VERSION}-alpine3.18 as GO
 FROM registry.k8s.io/etcd:${ETCD_VERSION} as etcd
 
 FROM ${BASE_IMAGE}