FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    ffmpeg \
    libopus0 \
    libopus-dev \
    pkg-config \
    gcc \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

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

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

# Copy source code
COPY src/ ./src/

# Create necessary directories
RUN mkdir -p /app/audio/raw /app/audio/processed /app/logs

# Run as non-root user
RUN useradd -m -u 1001 processor
RUN chown -R processor:processor /app
USER processor

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python src/healthcheck.py || exit 1

# Start the service
CMD ["python", "src/processor.py"]