FROM python:3.10-slim

ENV PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PORT=7860 \
    HF_HOME=/root/.cache/huggingface

# 1) Cài system deps: lib cho OpenCV + toolchain build C/C++
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgl1 \
    libglib2.0-0 \
    build-essential \
    gcc \
    g++ \
    make \
    pkg-config \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# 2) Cài Python deps (nâng pip trước để tránh lỗi wheel)
COPY requirements.txt .
RUN python -m pip install --upgrade pip setuptools wheel \
 && pip install -r requirements.txt

# 3) Copy source
COPY . .

EXPOSE 7860

# 4) Chạy bằng gunicorn (app.py phải có biến flask_app)
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "app:flask_app"]