What is Selenoid ?
Selenoid is an alternative solution for Parallel Selenium test execution when you are not looking for Selenium Grid or Docker selenium.
Like the way Docker selenium out perform over selenium grid, Selenoid also has the advantage over selenium grid being dockerized.
Selenoid has successful implementation of docker containers to kick start browser tests. It provides fresh environment for each test.
In selenoid tests, containes starts with test and getting removed with test execution ends. This gives good performance for this design.
as first step of configuration , you may need to install docker and run selenoid on docker containers. Selenoid-ui is used to track test execution gui mode.