FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    libsndfile1 \
    ffmpeg \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install CPU-only version of PyTorch to reduce size
COPY requirements.txt .
RUN pip install --no-cache-dir librosa piano_transcription_inference gradio>=3.50.2 huggingface_hub \
    && pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu

# Copy application code
COPY . .

# Expose the port Gradio will run on
EXPOSE 7860

# Set Gradio to bind to all interfaces in Docker
ENV GRADIO_SERVER_NAME="0.0.0.0"

# Command to run the application
CMD ["python", "app.py"]