How can I scale a Selenium Grid using Docker?

How can I scale a Selenium Grid using Docker?

You can scale a Selenium Grid using Docker by creating multiple instances of Selenium nodes and connecting them to a hub.

What are the benefits of using Docker for Selenium Grid?

Using Docker allows for easy scaling, isolation of environments, and consistent configurations across different setups.

Can you provide a sample Docker Compose file for this setup?

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 -d.