Create a GitHub Action Configuration to Automatic Deploy an Astro Blog

Now that we are on Fly.io we'll want to replicate the functionality that Vercel was automatically doing for us by creating and configuring a GitHub Action to deploy our site whenever new commits hit the main branch.

Luckily for us there are a number of pre-defined GitHub actions that we can utilize like actions/checkout@v3, actions/setup-node@v3, and superfly/flyctl-actions/setup-flyctl@master. You'll notice that the first two actions are maintained by GitHub where the last is maintained by Fly.io.

During this process you will also need to generate a token to verify your deployment to Fly.io and store that in the repository Action secrets.