version: "3"
services:
    web:
      image: busybox
      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8000"]
      working_dir: /var/www/html
      volumes:
        - /var/www/html
      tmpfs:
        - /run
        - /tmp
    web1:
      image: busybox
      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8001"]
      working_dir: /var/www/html
      volumes:
        - myvol1:/var/www/html:ro
    web2:
      image: busybox
      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8002"]
      working_dir: /var/www/html
      volumes:
        - myvol2:/var/www/html:ro
    web3:
      image: busybox
      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8003"]
      working_dir: /var/www/html
      volumes:
        - myvol2:/var/www/html

volumes:
  myvol2:
    labels:
      mylabel: myval
  data:
    name: my-app-data
    external: true
  data2:
    external:
      name: actual-name-of-volume