# ------------- 第一阶段：构建依赖 -------------
FROM python:3.10-slim AS builder

# 安装系统依赖
RUN apt update && apt install -y --no-install-recommends \
    libsndfile1 ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# 安装Python依赖
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ------------- 第二阶段：运行时镜像 -------------
FROM python:3.10-slim

# 从构建阶段复制已安装的依赖
COPY --from=builder /usr/lib /usr/lib       # 共享系统库
COPY --from=builder /usr/local/lib/python3.10/site-packages /usr/local/lib/python3.10/site-packages

# 设置工作目录和Python路径
WORKDIR /app
ENV PYTHONPATH=/app

# 复制代码
COPY app ./app

# 暴露端口
EXPOSE 9480

# 启动命令
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "9480"]