feat: add news retrieval functionality and register new function

Dockerfile-server

@@ -3,11 +3,18 @@ FROM python:3.10-slim AS builder
 
 WORKDIR /app
 
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends git && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
 COPY main/xiaozhi-server/requirements.txt .
 
 # 安装Python依赖
 RUN pip install --no-cache-dir -r requirements.txt
 
+RUN git clone https://github.com/microsoft/markitdown.git && cd markitdown && pip install -e 'packages/markitdown[all]'
+
 # 第二阶段：生产镜像
 FROM python:3.10-slim
 
@@ -21,6 +28,7 @@ RUN apt-get update && \
 
 # 从构建阶段复制Python包和前端构建产物
 COPY --from=builder /usr/local/lib/python3.10/site-packages /usr/local/lib/python3.10/site-packages
+COPY --from=builder /app/markitdown/ /app/markitdown/
 
 # 复制应用代码
 COPY main/xiaozhi-server .