services:

  hub:
    image: selenium/hub
    volumes:
      - /dev/shm:/dev/shm
    container_name: hub
    hostname: hub
    privileged: true
    # shm_size: 2gb
    ports:
      - 4444:4444
      - 4443:4443
      - 4442:4442
    environment:
      - GRID_MAX_SESSION=50
      - GRID_TIMEOUT=1800
      - GRID_DEBUG=true