Dockerfile

# Multi-stage build for optimized image size
FROM python:3.11-slim as builder

# Set working directory
WORKDIR /app

# Install dependencies
COPY backend/requirements.txt .
RUN pip install --user --no-cache-dir -r requirements.txt

# Production stage
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Copy Python dependencies from builder
COPY --from=builder /root/.local /root/.local

# Copy application code
COPY backend/ ./backend/
COPY data/ ./data/

# Set environment variables
ENV PATH=/root/.local/bin:$PATH
ENV PYTHONUNBUFFERED=1

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"

# Run the application
CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "8000"]