FROM python:3.11-slim

WORKDIR /app

# 复制 requirements.txt 并优先安装依赖（利用 Docker 层缓存）
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt -i https://mirrors.aliyun.com/pypi/simple/

# 复制整个项目
COPY . .

EXPOSE 5000

# 确保模块名和 Flask 实例名正确（默认是 app:app）
CMD ["gunicorn", "-w", "2", "-k", "gthread", "--threads", "4", "-b", "0.0.0.0:5000", "app:app"]