后端的docker构建

backend/dockerfile

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+FROM python:3.11-slim AS builder
+
+WORKDIR /insightradar
+
+COPY pyproject.toml uv.lock ./
+
+RUN --mount=type=cache,target=/root/.cache/uv \
+    pip install --no-cache-dir uv && \
+    uv sync --frozen --no-dev
+
+COPY app app
+COPY main.py main.py
+
+#-----------------------------------------------
+
+FROM python:3.11-slim
+
+WORKDIR /insightradar
+
+# 👇 复制虚拟环境
+COPY --from=builder /insightradar/.venv /insightradar/.venv
+
+COPY app app
+COPY main.py main.py
+
+# 👇 关键：用 venv 里的 python
+ENV PATH="/insightradar/.venv/bin:$PATH"
+
+EXPOSE 8000
+
+CMD ["python","main.py"]