Dockerfile

FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    rubberband-cli \
    libsndfile1 \
    ffmpeg \
    curl \
    && curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
    && apt-get install -y nodejs \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Install Python dependencies first (cache layer)
COPY backend/requirements.txt backend/
RUN pip install --no-cache-dir -r backend/requirements.txt

# Install and build frontend
COPY frontend/package.json frontend/package-lock.json* frontend/
RUN cd frontend && npm install

COPY frontend/ frontend/
RUN cd frontend && npm run build

# Copy backend code
COPY backend/ backend/

# Expose port 7860 (Hugging Face Spaces requirement)
EXPOSE 7860

# Run the app
CMD ["python", "-m", "uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "7860"]