Here a cheatsheet to remember how to test / deploy the website:

To test locally, run:

npm run dev

To build:

npm run build

Now the dist folder will have been created. We can test it by running:

npm run preview

Should look the same as npm run dev.

If everything looks fine:

npm run deploy

This will deploy the changes into the gh-pages branch, and the website will be updated in a few (2-3) minutes. We can check the status in the Actions tab in GitHub.