diff --git a/Dockerfile b/Dockerfile
index 943d7b8..4700612 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,23 +10,27 @@ RUN npm run build
 # ===== 阶段2: Python 运行时 =====
 FROM python:3.12-slim AS runtime
 
-# 使用腾讯云镜像源加速（国内服务器）
-RUN sed -i 's/deb.debian.org/mirrors.tencentyun.com/g' /etc/apt/sources.list.d/debian.sources
-
-# 安装 OpenCV 系统依赖
-RUN apt-get update && apt-get install -y --no-install-recommends \
+# 优先使用腾讯云镜像源加速；不可用时自动回退官方源。
+RUN cp /etc/apt/sources.list.d/debian.sources /tmp/debian.sources && \
+    sed -i 's/deb.debian.org/mirrors.tencentyun.com/g' /etc/apt/sources.list.d/debian.sources && \
+    (apt-get update -o APT::Update::Error-Mode=any || \
+        (cp /tmp/debian.sources /etc/apt/sources.list.d/debian.sources && \
+        apt-get update -o APT::Update::Error-Mode=any)) && \
+    apt-get install -y --no-install-recommends \
     libgl1 \
     libglib2.0-0 \
+    nodejs \
     && rm -rf /var/lib/apt/lists/*
 
-# 安装 uv（通过 pip + 国内镜像，避免依赖 ghcr.io 国内网络问题）
-RUN pip install -i https://mirrors.tencentyun.com/pypi/simple uv
+# 安装 uv：优先腾讯云 PyPI，失败时回退默认 PyPI。
+RUN pip install -i https://mirrors.tencentyun.com/pypi/simple uv || pip install uv
 
 WORKDIR /app
 
 # 先复制依赖文件，利用 Docker 缓存层
 COPY pyproject.toml uv.lock* README.md alembic.ini ./
-RUN uv venv /app/.venv && UV_INDEX_URL=https://mirrors.tencentyun.com/pypi/simple uv pip install -e .
+RUN uv venv /app/.venv && \
+    (UV_INDEX_URL=https://mirrors.tencentyun.com/pypi/simple uv pip install -e . || uv pip install -e .)
 
 # 复制项目代码
 COPY core/ ./core/