diff --git a/Dockerfile b/Dockerfile
index dd68de8..9347bff 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
 # ===== 第一阶段：构建阶段 =====
 FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 
-# 清除所有现有源
-RUN rm -rf /etc/apt/sources.list /etc/apt/sources.list.d/*
+# 配置 apt-get 使用 apt-cacher-ng 作为代理
+RUN echo 'Acquire::http::Proxy "http://192.168.1.140:3142";' > /etc/apt/apt.conf.d/01proxy
 
 # 配置阿里云镜像源
 RUN echo "deb http://mirrors.aliyun.com/debian/ bookworm main contrib non-free" > /etc/apt/sources.list && \
@@ -50,8 +50,8 @@ RUN mkdir -p /app/publish && \
 # ===== 第二阶段：运行阶段 =====
 FROM mcr.microsoft.com/dotnet/aspnet:8.0
 
-# 清除所有现有源
-RUN rm -rf /etc/apt/sources.list /etc/apt/sources.list.d/*
+# 配置 apt-get 使用 apt-cacher-ng 作为代理
+RUN echo 'Acquire::http::Proxy "http://192.168.1.140:3142";' > /etc/apt/apt.conf.d/01proxy
 
 # 配置阿里云镜像源
 RUN echo "deb http://mirrors.aliyun.com/debian/ bookworm main contrib non-free" > /etc/apt/sources.list && \