Add Docker support: Dockerfile, docker-compose.yml, and production configuration

- Add Dockerfile with multi-stage build for Flask app containerization
- Include .dockerignore to optimize build context
- Add docker-compose.yml for easy deployment with health checks
- Update run.py to handle production mode with allow_unsafe_werkzeug
- Add DOCKER.md with comprehensive deployment instructions
- Configure health check endpoint at /health
- Run as non-root user for security
- Support for environment variables and proper port mapping

docker-compose.yml

@@ -0,0 +1,31 @@
+version: '3.8'
+
+services:
+  markov-economics:
+    build: .
+    ports:
+      - "5000:5000"
+    environment:
+      - FLASK_ENV=production
+      - FLASK_APP=run.py
+      - PYTHONUNBUFFERED=1
+    volumes:
+      # Optional: Mount for persistent data if needed
+      - ./data:/app/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "python", "-c", "import requests; requests.get('http://localhost:5000/health', timeout=2)"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    networks:
+      - markov-network
+
+networks:
+  markov-network:
+    driver: bridge
+
+volumes:
+  markov-data:
+    driver: local