🐛 fix(docker): 基础镜像从 VPC 内网切换为公网默认镜像

CI 服务器在香港，无法访问 registry-vpc 内网地址

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -1,6 +1,6 @@
 ARG GOLANG_CI_LINT_VERSION  
   
-FROM registry-vpc.cn-beijing.aliyuncs.com/d8dcloud/go:1.23 as builder  
+FROM golang:1.23 as builder  
 ENV PATH /go/bin:/usr/local/go/bin:$PATH  
 ENV GOPATH /go  
 COPY . /go/src/github.com/virtual-kubelet/alibabacloud-eci
@@ -10,7 +10,7 @@ RUN go env -w GOPROXY=https://goproxy.cn,https://mirrors.aliyun.com/goproxy/,dir
 RUN make build  
 RUN cp bin/virtual-kubelet /usr/bin/virtual-kubelet  
   
-FROM registry-vpc.cn-beijing.aliyuncs.com/d8dcloud/golangci/golangci-lint:${GOLANG_CI_LINT_VERSION} as lint
+FROM golangci/golangci-lint:${GOLANG_CI_LINT_VERSION} as lint
 WORKDIR /app
 # 设置 Go 国内代理加速
 RUN go env -w GOPROXY=https://goproxy.cn,https://mirrors.aliyun.com/goproxy/,direct
@@ -28,7 +28,7 @@ RUN \
     --mount=type=cache,target=/root/.cache/golangci-lint \  
     golangci-lint run -v --out-format="${OUT_FORMAT:-colored-line-number}"  
   
-FROM registry-vpc.cn-beijing.aliyuncs.com/d8dcloud/alpine:latest  
+FROM alpine:latest  
 COPY --from=builder /usr/bin/virtual-kubelet /usr/bin/virtual-kubelet  
 COPY --from=builder /etc/ssl/certs/ /etc/ssl/certs