Dockerfile

# Use Python 3.11 slim image as base
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install Python dependencies
COPY pyproject.toml .
RUN pip install --upgrade pip setuptools wheel && \
    pip install -e .

# Copy application code
COPY src/ ./src/

# Create non-root user
RUN useradd --create-home --shell /bin/bash app && \
    chown -R app:app /app
USER app

# Expose port
EXPOSE 8000

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

# Default command
CMD ["demo-service", "--host", "0.0.0.0", "--port", "8000"]