GitHub Actions is now available in preview as an option for CI/CD in the App Service Deployment Center. Selecting this option will put a complete workflow file into your repository that will build and deploy the application to the web app whenever there’s a new commit on the chosen branch. This saves considerable time for first-time GitHub Actions users. Additionally, you can always adjust this workflow file as your needs evolve and you become more comfortable with GitHub Actions.
To get started, watch this video and follow the steps.