FROM python:3.12-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    OMP_THREAD_LIMIT=1 \
    OCR_DPI=220 \
    OCR_PSM=6 \
    OCR_LANG=eng \
    MAX_UPLOAD_MB=300 \
    HOME=/home/user

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        curl \
        libglib2.0-0 \
        libgomp1 \
        tesseract-ocr \
        tesseract-ocr-eng \
    && rm -rf /var/lib/apt/lists/* \
    && useradd -m -u 1000 user

WORKDIR /home/user/app

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

COPY --chown=user:user app.py .

USER user

EXPOSE 7860

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860", "--timeout-keep-alive", "75"]