Dockerfile

# Multi-stage build for smaller production image
FROM python:3.12-slim as builder

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

# Production stage
FROM python:3.12-slim

# Install runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get autoremove -y

# Create non-root user
RUN useradd --create-home --shell /bin/bash --uid 1000 appuser

# Copy Python packages from builder
COPY --from=builder /root/.local /home/appuser/.local

# Set up application
WORKDIR /app
COPY --chown=appuser:appuser app ./app

# Create required directories with proper permissions
RUN mkdir -p /app/logs /app/shared_host_folder \
    && chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Add local Python packages to PATH
ENV PATH=/home/appuser/.local/bin:$PATH

# Production configuration
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    AUDIT_LOG_FILE=/app/logs/audit.log \
    MCP_BASE_WORKING_DIR=/app/shared_host_folder

EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

CMD ["python", "-m", "app.main"]