Dockerfile

FROM python:3.12-slim-bookworm

WORKDIR /app

# Create non-root user
RUN groupadd -r appuser && useradd -r -g appuser appuser

# Install system dependencies and security updates
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    curl \
    ca-certificates \
    && apt-get upgrade -y \
    && apt-get dist-upgrade -y \
    && apt-get autoremove -y \
    && apt-get autoclean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Copy requirements first for better caching
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create necessary directories and set permissions
RUN mkdir -p logs data \
    && chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Run application
CMD ["python", "-m", "uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "8000"]