deploy html template in caprover
Fork this template with Use this template button in this page
In your repository, copy your HTML theme in www directory and change main html file name to index.html
Push your changes, then goto caprover and create new empty app
Now in new created caprover app goto Deployment tab and fill Method 3: Deploy from Github/Bitbucket/Gitlab with your repository data.
Press Save & Update button and then press Force Build button