docker-compose.yaml

version: '3.5'
services:

  # This is Selenium Standalone docker image. In the future it should be substituted with official one.
  selenium-standalone:
    container_name: selenium-standalone
    image: selenium/standalone-chrome:latest
    # We're using 4444 port for communication with Selenium Standalone
    ports:
      - "4444:4444"
    environment:
    # Hotfix for broken connection issues for bigger scale. Nasty, but works. ¯\_(ツ)_/¯
      - NODE_MAX_INSTANCES=100
      - NODE_MAX_SESSION=100
    # Logs from Selenium Server are huge and pollute our logs, that's why we mute them.
    # logging:
      # driver: none
    volumes:
      - /dev/shm:/dev/shm
    # Network for communication between containers.
    networks:
      - testing-network

  wdio:
    container_name: wdio
    # Pass this env variable from Jenkins job to WebdriverIO framework
    environment:
      - ENV=${ENV}
      - CONFIG=${CONFIG}
    build:
      context: .
      dockerfile: Dockerfile
    # Run all suites (no --suite switch) using configured 4444 port
    command: ./node_modules/.bin/wdio ./specs/config/remote-${CONFIG}.conf.js --port=4444
    # Test results and screenshots are generated in runtime.
    # To be able to see them in Jenkins we need to make them persist. That's why we use volumes.
    volumes:
      - ./allure-results:/allure-results
      - ./screenshots:/screenshots
    # Wait for Selenium Standalone to build first.
    depends_on:
      - selenium-standalone
    # Network for communication between containers.
    networks:
      - testing-network

networks:
  testing-network:
    driver: bridge