REQUIREMENTS: you should have at least a working docker setup on your laptop
Just choose a scenario/folder, fire it up with docker-compose up. Later scale it with docker-compose scale web=<N> ...N as the number of instances you want. To kill a random one you need to use docker itself, with a docker stop <instance>. Check out Tavern to validate that the session is being handled properly, then hammer it with Locust; both have a sample file in this root folder.
Happy hackin'