Dockerfile.backend

# =============================================================================
# AILF Backend — Dockerfile
# FastAPI 后端服务
# =============================================================================
FROM python:3.11-slim AS builder

WORKDIR /build

# 编译依赖 (PyTorch 等需要)
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

COPY backend/requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt \
    && pip install --no-cache-dir --prefix=/install \
        gunicorn \
        uvloop

# =============================================================================
FROM python:3.11-slim AS runtime

WORKDIR /app

# 运行时依赖 (PyMySQL 连接 MySQL 需要)
RUN apt-get update && apt-get install -y --no-install-recommends \
    default-libmysqlclient-dev \
    && rm -rf /var/lib/apt/lists/*

# 从 builder 阶段复制已安装的依赖
COPY --from=builder /install /usr/local

# 复制后端代码
COPY backend/ ./backend/
COPY Model/ ./Model/

# PYTHONPATH
ENV PYTHONPATH="/app/backend:${PYTHONPATH}" \
    PYTHONUNBUFFERED=1

EXPOSE 5000

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "5000"]