How do I use Docker Compose with Selenium Grid?

How do I use Docker Compose with Selenium Grid?

You can use Docker Compose to set up a Selenium Grid by defining services for the hub and nodes in a YAML file.

Can you provide an example of a Docker Compose file for Selenium Grid?

Sure! Here's a basic example:

version: '3'
services:
  selenium-hub:
    image: selenium/hub
    ports:
      - "4444:4444"
  chrome:
    image: selenium/node-chrome
    depends_on:
      - selenium-hub
    environment:
      - HUB_HOST=selenium-hub
  firefox:
    image: selenium/node-firefox
    depends_on:
      - selenium-hub
    environment:
      - HUB_HOST=selenium-hub

How do I run this Docker Compose file?

You can run the Docker Compose file by navigating to the directory containing it and executing the command docker-compose up.

What if I want to scale the number of nodes?

You can scale the nodes by using the --scale option, like this: docker-compose up --scale chrome=3 --scale firefox=3.