This GitHub action is a Ren'Py Docker Instance Builder used by the Ren'Py Auto Builder Action found at https://github.com/jrhurleyy/renpy-autobuilder-action. The action in this repository is a strict dependency of the Ren'Py Auto-Builder, but don't worry, there is no setup that you have to do!
No setup required from the user end! Feel free to fork the repository or open a pull-request if you believe there is a fix needed.