I am trying to use this method, becuase I have zero expirence with github actions.
Github says the site is publishing successfully but when I go iron-shark .github.io it only show a page not found screen.
Thanks for letting me know. Apparently my browser was redirecting me to my custom domain automatically when I tried to go to the .github.io address, and since I hadn’t set up the cname file yet I was getting the error. Its working now.