Example of the compose file to create selenium grid

compose.yaml

# docker-compose yml file use `docker-compose -f <file_name> up`
# Add the `-d` flag at the end for detached execution
# Jenkins should use `docker-compose -f jenkins/Compose.yaml up -d && docker-compose -f jenkins/Compose.yaml scale chrome=4 firefox=4`
version: '2'
services:
  firefox:
    image: selenium/node-firefox-debug:3.14.0-europium
    volumes:
    - /dev/shm:/dev/shm
    - /Users/pshynin/Downloads:/home/seluser/Downloads
    depends_on:
    - hub
    environment:
      HUB_HOST: hub
      SCREEN_WIDTH: 1920
      SCREEN_HEIGHT: 1200
    ports:
    - 30000:5900

  chrome:
    image: selenium/node-chrome-debug:3.14.0-europium
    volumes:
    - /dev/shm:/dev/shm
    - /Users/pshynin/Downloads:/home/seluser/Downloads
    depends_on:
    - hub
    environment:
      HUB_HOST: hub
      SCREEN_WIDTH: 1920
      SCREEN_HEIGHT: 1200
    ports:
    - 30001:5900

  hub:
    image: selenium/hub:3.14.0-europium
    volumes:
    - /dev/shm:/dev/shm
    ports:
    - "4444:4444"
    environment:
    - "GRID_MAX_SESSION=4"