fix: Dockerfile 中添加 playwright install chromium 下载浏览器

Dockerfile

@@ -21,8 +21,9 @@ RUN pip install --no-cache-dir uv && \
 
 COPY . .
 
-# 安装 Playwright 系统依赖（不下载 Chromium，使用系统 chromium 包）
-RUN .venv/bin/python -m playwright install-deps chromium
+# 安装 Playwright 系统依赖 + 下载 Chromium 浏览器
+RUN .venv/bin/python -m playwright install-deps chromium && \
+    .venv/bin/python -m playwright install chromium
 
 RUN chmod +x entrypoint.sh
 ENTRYPOINT ["./entrypoint.sh"]