FROM python:3.12-slim

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY main.py inference.py preprocess.py ./

# HF Space จะ inject env PORT (ปกติ 7860) และตัวแปรจาก Space secrets/variables
ENV PORT=7860
EXPOSE 7860

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT}"]