[iGANGNAM]

just install pterodactyl (to make use of it's API) plus it uses Docker images and use ovh game dedicated servers to have infra.
Thats more than you need. I don't see why you would need to pay anyone for this information.
There is also images for CS:GO server (with sourcemod/metamod) too https://github.com/Software-Noob/pterodactyl-images