Merge pull request 'refactor: 🛠️ 优化 Dockerfile，重组构建阶段，移除冗余安装步骤' (#33) from cjl-dev into master

Reviewed-on: http://120.26.116.243:3000/root/model-lab/pulls/33

Dockerfile

@@ -1,26 +1,36 @@
-FROM docker.io/python:3.10.16-slim
+# ======================
+# Build Stage（含 gcc）
+# ======================
+FROM python:3.10.16-slim AS builder
 
 RUN sed -i 's|deb.debian.org|mirrors.tuna.tsinghua.edu.cn|g' /etc/apt/sources.list.d/debian.sources \
  && sed -i 's|security.debian.org|mirrors.tuna.tsinghua.edu.cn|g' /etc/apt/sources.list.d/debian.sources
 
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
-    gcc g++ unixodbc unixodbc-dev default-libmysqlclient-dev \
- || (sleep 3 && apt-get update && apt-get install -y --no-install-recommends \
-    gcc g++ unixodbc unixodbc-dev default-libmysqlclient-dev) \
+    gcc g++ unixodbc-dev default-libmysqlclient-dev \
  && rm -rf /var/lib/apt/lists/*
 
+WORKDIR /build
+COPY requirements.txt .
+
+# 安装依赖到 /python_install
+RUN pip install --no-cache-dir --prefix=/python_install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
+
+
+# ======================
+# Runtime Stage（无 gcc）
+# ======================
+FROM python:3.10.16-slim
+
 WORKDIR /app
 
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
+# 只复制依赖(已编译好)
+COPY --from=builder /python_install /usr/local
 
-# 🔥 只复制除 config.py 外的全部代码
+# 复制代码
 COPY . .
 
-# 🔥 再显式复制 config.py（此时一定是文件）
-COPY config.py /app/config.py
-
 RUN mkdir -p /opt/alert/model-lab \
  && cp /app/config.py /opt/alert/model-lab/config.py