There a simple Node.js Application for Azure Web Applicaton service. By default building infrastructure for this simple application already has been included in the azure-pipeline file. If you are going to create infrastructure using ARM template please remove the "Release Pipeline" stage from the azure-pipeline file.
Click the button below to deploy an Azure Web App. This will create a new app service plan and web app. You can then create build and release pipelines using GitHub Actions to continuously deploy the application in this repo to the web app.