ci(docker): 优化Dockerfile使用国内镜像源

配置GOPROXY使用国内代理并替换Alpine镜像源为阿里云镜像，以加速构建过程

Dockerfile

@@ -1,4 +1,6 @@
 FROM golang:1.21-alpine AS build
+ENV GOPROXY=https://goproxy.cn,direct
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 WORKDIR /app
 RUN apk add --no-cache build-base
 COPY server/ ./server/
@@ -7,6 +9,7 @@ WORKDIR /app/server
 RUN go build -o /app/bin/marketing-data-server ./cmd/server
 
 FROM alpine:3.19
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 WORKDIR /app
 COPY --from=build /app/bin/marketing-data-server /app/bin/marketing-data-server
 COPY --from=build /app/web /app/web