Write samples for Testcontainers

Hi Dody! I hope you're doing well. I wanted to reach out because I am the maintainer of [Testcontainers for .NET](https://github.com/testcontainers/testcontainers-dotnet), a library that provides support for testing with disposable Docker containers. This is a powerful tool for testing ASP.NET applications and services.

I would love to propose adding Testcontainers for .NET to your repository and including it in your great samples. I believe that this library will be a valuable asset for your community, as it allows for reliable and consistent testing in an isolated environment.

Let me know if you're interested in incorporating Testcontainers for .NET into your repository. I'd be happy to answer any questions, provide more information or help.