Thanks for using Azure. If I understand you correctly you want to deploy your Angular App on Azure App service?
Please take a look at this Azure doc Create a Node.js web app in Azure which shows you how to deploy node app in Azure.
You can also check out this non-Azure blog post: How To Run and Deploy Angular with NodeJS Backend on Azure App Services
which shows you how to deploy Angular with NodeJS Backend using Azure App Services.
Hope that helps.
please let us know if you have further questions.
Best,
Grace