diff --git a/backend/Dockerfile b/backend/Dockerfile
index bfffbe7..b4e4d17 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -7,8 +7,6 @@ FROM hub.skillixx.com/golang:1.23-alpine AS builder
 # 设置工作目录
 WORKDIR /app
 
-# 配置镜像源加速
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 
 # 安装构建依赖 (包含CGO所需的gcc和sqlite3开发库)
 RUN apk add --no-cache git ca-certificates tzdata gcc musl-dev sqlite-dev build-base