FROM python:3.11-slim AS builder
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt

FROM python:3.11-slim AS runner
WORKDIR /app
ENV PORT=7860
RUN apt-get update && apt-get install -y --no-install-recommends tesseract-ocr && rm -rf /var/lib/apt/lists/*
COPY --from=builder /install /usr/local
COPY . .
RUN mkdir -p output && useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser
EXPOSE 7860
CMD ["python", "main.py"]