Update Dockerfile

Dockerfile

@@ -21,7 +21,7 @@ RUN apt-get update && apt-get install -y \
 FROM python:3.10-slim
 
 # 设置工作目录
-WORKDIR /app
+WORKDIR /tmp
 
 # 从构建阶段复制必要的文件
 COPY --from=builder /usr/local/lib/python3.10/site-packages /usr/local/lib/python3.10/site-packages
@@ -30,6 +30,10 @@ COPY . .
 
 # 设置环境变量
 ENV PYTHONUNBUFFERED=1
+ENV MPLCONFIGDIR=/tmp/matplotlib
+
+# 确保Matplotlib配置目录可写
+RUN mkdir -p /tmp/matplotlib && chmod -R 777 /tmp/matplotlib
 
 # 暴露 Flask 端口
 EXPOSE 5000