Requirements

The job that runs the action needs to have the following requirements:

OS: Windows (I'd recommend to just use windows-latest)
The actionactions/checkout being specified before the Minionguypro/Inno-Setup-Action is in your job!
An existing directory with an Inno Setup script in it, which is specified in the action. If not specified or it doesn't exist (or something inside the script isn't right to work with the workflow. See the Introduction page for more information), the action will fail with guarantee!

Support for Wine might be added in the future, but I'd need to do some research first and it isn't planned for now.