version: '3'                                                                  
services:                                                                   
  blog:                                                                     
    image: ghost                                  
    ports:                                                                
      - "8002:2368"                                                          
    deploy:                                                               
      placement:                                                          
        constraints: [node.role == manager]                               
    volumes:                                                              
      - data:/var/lib/ghost/content                                                        
    environment:
      mail_transport: SMTP
      mail_options_service: smtp.139.com
      mail_options_auth_user: shaojj
      mail_options_auth_pass: imwolf

volumes:                                                                      
  data: