Compose file for two pairs of selenium grid hud and selenium node

docker-compose.yml

version: '2'
services:
  hub1:
    image: <hub-image>
    restart: always
    ports:
      - "4441:4444"
    environment:
      - JAVA_OPTS=-Xmx512m
      - GRID_NEW_SESSION_WAIT_TIMEOUT = 10000
  senode1:
    image: <node-image>
    restart: always
    depends_on:
      - hub1
    volumes:
      - /var/lib/selenium/Dropbox:/var/lib/selenium/Dropbox
      - /dev/shm:/dev/shm
    environment:
      - HUB_PORT_4444_TCP_ADDR=hub1
      - HUB_PORT_4444_TCP_PORT=4444
      - JAVA_OPTS=-Xmx512m
      - TZ=Europe/Moscow
  hub2:
    image: <hub-image>
    restart: always
    ports:
      - "4442:4444"
    environment:
      - JAVA_OPTS=-Xmx512m
      - GRID_NEW_SESSION_WAIT_TIMEOUT = 10000
  senode2:
    image: <node-image>
    restart: always
    depends_on:
      - hub2
    volumes:
      - /var/lib/selenium/Dropbox:/var/lib/selenium/Dropbox
      - /dev/shm:/dev/shm
    environment:
      - HUB_PORT_4444_TCP_ADDR=hub2
      - HUB_PORT_4444_TCP_PORT=4444
      - JAVA_OPTS=-Xmx512m
      - TZ=Europe/Moscow