Dockerfile

FROM python:3.10-slim

WORKDIR /app

# Install system dependencies for librosa and audio processing
RUN apt-get update && apt-get install -y \
    libsndfile1 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better caching
COPY requirements.txt .

# Install CPU-only PyTorch first (smaller size)
RUN pip install --no-cache-dir torch torchaudio --index-url https://download.pytorch.org/whl/cpu

# Install other dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code and model
COPY . .

# Create a non-root user for HF Spaces
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR /app

# Hugging Face Spaces uses port 7860
EXPOSE 7860

# Run the application (2 workers for increased performance, Python handles thread locking to prevent OOM)
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "2"]