First steps with Docker and Kubernetes - Introduction

It's a very good example to learn docker and kubernetes multi-application deployment for a beginner.

I tried all examples in your 4 posts, but struck in kubernetes example.

When I deployed these 3 services with "docker stack deploy --compose-file .\docker-compose.yml mywebapp"

In this command, it shows warning for all 3 services that "container_name" in docker-compose is deprecated"

The webapp failed to access webapi and localhost:8080 showed error page "HttpRequestException: Response status code does not indicate success: 500 (Internal Server Error)."

It seems webapp cannot access "http://newsfeed/api/news"

Is there any fix / solution to resolve this issue?

I am using all latest downloads e.g. Docker Desktop, etc  

Thanks,