Setting up a Selenium Grid infrastructure every single time you need an automated test execution might be a hectic process and might incur a lot of cost for both setting up the gird and its maintenance. To overcome this inconvenience, Docker comes into the picture and helps manage Selenium dependencies to be downloaded in Docker containers running on Linux virtual machines. This helps us to easily setup a test automation of web apps using selenium. This guide will help you understand the intricacies to set up a disposable Selenium Grid infrastructure using Docker to accelerate the Selenium test automation process.