Dockerfile

# Multi-stage build for raspberry-llm
# Stage 1: Base with system dependencies
FROM python:3.11-slim AS base

# Install system dependencies for OpenCV, audio, and camera
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libgl1 \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    portaudio19-dev \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Stage 2: Dependencies
FROM base AS deps

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Stage 3: Runtime
FROM deps AS runtime

# Copy application code
COPY . .

# Create non-root user for security
RUN useradd --create-home appuser && chown -R appuser:appuser /app
USER appuser

# Environment
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Health check
HEALTHCHECK --interval=30s --timeout=3s \
    CMD python -c "import src; print('OK')" || exit 1

# Entry point
CMD ["python", "main.py"]