version: '3'

services:

  selenium-hub:
    image: selenium/hub:3.141.59-neon
    ports:
      - "4444:4444"
    volumes:
      - /dev/shm:/dev/shm
    environment:
      - JAVA_OPTS=-Xmx512m
      - GRID_TIMEOUT=60
      - GRID_BROWSER_TIMEOUT=30
    healthcheck:
      test: ["CMD", "/opt/bin/check-grid.sh", "--host", "127.0.0.1", "--port", "4444"]
      interval: 15s
      timeout: 30s
      retries: 5
    restart: unless-stopped