1

server/Dockerfile

@@ -16,8 +16,12 @@ COPY . .
 RUN CGO_ENABLED=0 go build -o /out/observer-server .
 
 FROM alpine:3.20
+# 国内网络 dl-cdn.alpinelinux.org 不通，默认走阿里云镜像；构建时可用 --build-arg 覆盖
+ARG APK_MIRROR=https://mirrors.aliyun.com
 # 时区对齐宿主（自然日授权语义依赖本地时区）
-RUN apk add --no-cache tzdata && \
+# apk 走 http_proxy 环境变量：清空 buildkit 注入的宿主代理（同上方 go mod download，容器内代理不通）
+RUN sed -i "s#https://dl-cdn.alpinelinux.org#${APK_MIRROR}#g" /etc/apk/repositories && \
+    http_proxy= https_proxy= HTTP_PROXY= HTTPS_PROXY= apk add --no-cache tzdata && \
     cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
     echo "Asia/Shanghai" > /etc/timezone
 WORKDIR /app