When I started using selenium and UI testing tools, my first experience with headless browsers was with docker, by using selenium/standalone-chrome image, which is very easy to use, since gives a running selenium with all deps. After some time, I was working with Azure Devops and running my tests without docker, directly with webdriver (chromedriver and safaridriver, in my case). To avoid issues with the agent, I was using XVFB to generate a new window and run the tests there. It’s a pretty simple code:
But, when I was trying to do the same on macos, I got some trouble to install xvfb by brew. So reading more careful the documentation, I saw that some drivers(Chrome and Firefox) provide this feature native, just select then when opening a browser:
You can access more info on SeleniumLibrary docs.