fix: 优化docker 镜像

Dockerfile.crawler

@@ -0,0 +1,17 @@
+# Python 爬虫服务（使用 DaoCloud 国内镜像源 + 清华 PyPI 源）
+FROM docker.m.daocloud.io/library/python:3.11-slim
+
+WORKDIR /app
+COPY crawler/requirements.txt ./
+RUN pip install --no-cache-dir -i https://pypi.tuna.tsinghua.edu.cn/simple -r requirements.txt
+COPY crawler ./
+
+ENV DB_PATH=/data/data.db
+ENV API_BASE=http://api:3001
+ENV CLEANER_AI_DISABLED=1
+ENV GDELT_DISABLED=1
+ENV RSS_INTERVAL_SEC=60
+
+EXPOSE 8000
+
+CMD ["uvicorn", "realtime_conflict_service:app", "--host", "0.0.0.0", "--port", "8000"]