Selenium Grid docker-compose

selenium-hub.yml

version: "3"
services:
  selenium-hub:
    image: selenium/hub
    container_name: selenium_hub
    ports:
      - "4444:4444"
    environment:
      GRID_MAX_SESSION: 16
      GRID_BROWSER_TIMEOUT: 3000
      GRID_TIMEOUT: 3000
  selenium-chrome:
    image: selenium/node-chrome
    container_name: selenium_chrome
    depends_on:
      - selenium-hub
    environment:
      HUB_PORT_4444_TCP_ADDR: selenium-hub
      HUB_PORT_4444_TCP_PORT: 4444
      NODE_MAX_SESSION: 4
      NODE_MAX_INSTANCES: 4
    ports:
      - "5555:5900"
    volumes:
      - /dev/shm:/dev/shm
    links:
      - selenium-hub
  selenium-firefox:
    image: selenium/node-firefox
    container_name: selenium_firefox
    depends_on:
      - selenium-hub
    environment:
      HUB_PORT_4444_TCP_ADDR: selenium-hub
      HUB_PORT_4444_TCP_PORT: 4444
      NODE_MAX_SESSION: 2
      NODE_MAX_INSTANCES: 2
    ports:
      - "5556:5900"
    volumes:
      - /dev/shm:/dev/shm
    links:
      - selenium-hub
  selenium-opera:
    image: selenium/node-opera
    container_name: selenium_opera
    depends_on:
      - selenium-hub
    environment:
      HUB_PORT_4444_TCP_ADDR: selenium-hub
      HUB_PORT_4444_TCP_PORT: 4444
      NODE_MAX_SESSION: 2
      NODE_MAX_INSTANCES: 2
    ports:
      - "5557:5900"
    volumes:
      - /dev/shm:/dev/shm
    links:
      - selenium-hub