diff --git a/Dockerfile b/Dockerfile
index a544597..9313fca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,29 +1,27 @@
-FROM python:3.13-slim AS builder
+FROM python:3.12.2-alpine AS builder
 
 WORKDIR /app
 
-# 配置apt使用国内镜像源
-RUN sed -i 's/deb.debian.org/mirrors.ustc.edu.cn/g' /etc/apt/sources.list.d/debian.sources
+# 配置apk使用清华镜像源
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories
 
 # 安装构建依赖
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential \
-    && rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache build-base
 
 # 复制依赖文件
 COPY requirements.txt .
 
-# 使用国内镜像源安装依赖
-RUN pip config set global.index-url https://mirrors.ustc.edu.cn/pypi/web/simple \
+# 使用清华镜像源安装依赖
+RUN pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple \
     && pip install --no-cache-dir -r requirements.txt
 
 # 最终阶段
-FROM python:3.13-slim
+FROM python:3.12.2-alpine
 
 WORKDIR /app
 
 # 从builder阶段复制Python包
-COPY --from=builder /usr/local/lib/python3.13/site-packages/ /usr/local/lib/python3.13/site-packages/
+COPY --from=builder /usr/local/lib/python3.12/site-packages/ /usr/local/lib/python3.12/site-packages/
 COPY --from=builder /usr/local/bin/ /usr/local/bin/
 
 # 复制应用代码