I already had a dockerized Selenium-Grid but it was a good idea to replace it with Selenoid. The state of automation and the video recording feature are really impressive.

#^Selenoid

Selenoid is a powerful implementation of Selenium hub using Docker containers to launch browsers.

Lightweight and Lightning Fast
Suitable for personal usage and in big clusters:
* Consumes 10 times less memory than Java-based Selenium server under the same load
* Small 7 Mb binary with no external dependencies (no need to install Java)
* Browser consumption API working out of the box
* Ability to send browser logs to centralized log storage (e.g. to the ELK-stack)
* Fully isolated and reproducible environment

#^Scalable Selenium Cluster: Up & Running | Ivan Krutov
by seleniumconf on YouTube