Update README.md

Author: thangchung

README.md

@@ -9,6 +9,10 @@ A lightweight low ceremony .NET microservices are lifted and shifted to Kubernet
 ![product-catalog-api](https://github.com/thangchung/practical-dapr/workflows/product-catalog-ci/badge.svg?branch=master)
 ![inventory-api](https://github.com/thangchung/practical-dapr/workflows/inventory-ci/badge.svg?branch=master)
 
+> This repository based on some of the old libraries. So be careful if you use it in your production environment!!!
+>
+> We are working on [practical-clean-ddd](https://github.com/thangchung/practical-clean-ddd) for the new version of building the .NET apps with domain-driven design, clean architecture with Docker, Kubernetes, Tye, and Dapr in a practical way 👍
+
 # High level architecture
 
 ![](docs/assets/high_level_architecture.png)
@@ -70,4 +74,4 @@ If you liked `practical-dapr` project or if it helped you, please give a star :s
 2. Create your feature branch: `git checkout -b my-new-feature`
 3. Commit your changes: `git commit -am 'Add some feature'`
 4. Push to the branch: `git push origin my-new-feature`
-5. Submit a pull request :p
+5. Submit a pull request :p