Use the publish-folder command to publish a Dapp to a local folder:
solui publish-folder --spec /path/to/json --artifacts /path/to/contract/artifacts --folder /usr/local/share/dapp
This command will download the solUI renderer and place it inside your chosen output folder alongside your Dapp specification.
If you view this folder using a static file webserver you should see the rendered Dapp in all its glory. For example, using the serve package:
npx serve /usr/local/share/dapp
Then visit http://localhost:5000 (assuming this is what serve outputs) in your web browser.