国内 PyPI 安装 uv 更稳

deploy/docker/backend.Dockerfile

@@ -21,8 +21,8 @@ RUN apt-get update \
   && apt-get install -y --no-install-recommends curl ca-certificates python3 python3-pip \
   && rm -rf /var/lib/apt/lists/*
 
-RUN curl -LsSf https://astral.sh/uv/install.sh | sh \
-  && ln -sf /root/.local/bin/uv /usr/local/bin/uv
+RUN python3 -m pip install --no-cache-dir uv \
+  && ln -sf /usr/local/bin/uv /usr/bin/uv
 
 COPY apps/backend/package.json apps/backend/package-lock.json ./
 RUN npm ci