I recently open-sourced the code that I developed for the MiniCPS challenges for the SWaT Security Showdown (S3) event in 2017.
Here is the code.
The init.sh contains the list of commands that I run on a local testing machine and on the remote AWS instances that we used during the event. The attackers were provided with the VPN credentials to access two different subnetworks in a mixed MiniCPS simulation eg: water treatment (SWaT) and water distribution (WaDI).