Add the Dockerfile to the root of your static files
Init the git repository and/or add the remote of your dokku app
git remote add dokku git@yourdomain.com:appname
Commit all your changes and the repository
git commit -am Pushing to dokku git push dokku master
Optionally, add any extra domains with the domains plugin:
ssh dokku@yourdomain.com domains:add appname domain.com
Find all the available commands and help:
ssh dokku@yourdomain.com