This is a tutorial for creating a Selenium grid with Docker and Docker Compose using environment variables, above is the vid and below you will find some useful notes. 1. Pre-reqs Have Docker installed Have the code for our previous Galen Tests project or your own set of selenium tests locally 2. What is selenium grid Selenium grid is set of services or applications that allows us to create a testing environment in which we can test against different combinations of browsers and operating systems. You can also use it to run tests in parallel. ...