FROM python:3.11-slim

# System deps: tesseract, poppler, opencv libs
RUN apt-get update && apt-get install -y --no-install-recommends \
    tesseract-ocr \
    poppler-utils \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install CPU-only PyTorch first (avoids ~4GB of NVIDIA CUDA libs)
RUN pip install --no-cache-dir torch torchvision --index-url https://download.pytorch.org/whl/cpu

# Install remaining Python deps
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create required directories
RUN mkdir -p OMRChecker/inputs outputs/Results outputs/CheckedOMRs outputs/Manual outputs/Evaluation Images

# HF Spaces expects port 7860
ENV PORT=7860
EXPOSE 7860

CMD ["python", "app.py"]