Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.
For the sake of this example, let’s pretend the subfolder containing your site is named dist.
Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).
git checkout master # you can avoid this line if you are in master...
git subtree split --prefix dist -b gh-pages # create a local gh-pages branch containing the splitted output folder
git push -f origin gh-pages:gh-pages # force the push of the gh-pages branch to the remote gh-pages branch at origin
git branch -D gh-pages # delete the local gh-pages because you will need it: ref
Deploy to GitHub Pages and generate .nojekyll and CNAME files to output directory. Create & push to gh-pages subtree.
touch ./gitignore
sed -i '/.output/d' .gitignore # remove .output from .gitignore
npm run generate
touch .output/public/.nojekyll
echo "yourdomain.com" > .output/public/CNAME # only necessary for custom domain