Dockerfile

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

# Set working directory
WORKDIR /app

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

# Copy requirements first to leverage Docker layer caching
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create data directory for outputs
RUN mkdir -p data

# Create non-root user for security
RUN groupadd -r appuser && useradd -r -g appuser appuser
RUN chown -R appuser:appuser /app
USER appuser

# Expose port
EXPOSE 5002

# Environment variables
ENV FLASK_APP=app.py
ENV FLASK_ENV=production
ENV PYTHONPATH=/app

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:5002/api/config || exit 1

# Run the application
CMD ["python", "run_webapp.py", "--port", "5002", "--host", "0.0.0.0"]