First of all, you need pnpm. To install pnpm, just do npm install -g pnpm and make sure you have NodeJS installed.
Next, you're gonna have to clone the repository and navigate in. Once you're in, do pnpm install, and then do pnpm dev. This will run the server in localhost:5173.
Same folder again, but run pnpm build. Which will trigger vite's build process and compiles it all to one folder, ready to use.
Once it's done downloading, check it first by doing pnpm preview and going to a browser with URL localhost:4173.