docs: complete the Apache 2.0 copyright notice, add License section

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2024-2026 Tung Bui
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

@@ -13,6 +13,7 @@
   <a href="https://github.com/tungbq/devops-toolkit/actions/workflows/vulnerability-scanner.yaml"><img alt="Vulnerability scan" src="https://github.com/tungbq/devops-toolkit/actions/workflows/vulnerability-scanner.yaml/badge.svg"/></a>
   <a href="https://hub.docker.com/r/tungbq/devops-toolkit"><img alt="tungbq/devops-toolkit" src="https://img.shields.io/docker/pulls/tungbq/devops-toolkit"/></a>
   <a href="https://github.com/tungbq/devops-toolkit/stargazers"><img alt="GitHub Repo stars" src="https://img.shields.io/github/stars/tungbq/devops-toolkit"/></a>
+  <a href="./LICENSE"><img alt="License" src="https://img.shields.io/github/license/tungbq/devops-toolkit"/></a>
 </p>
 
 ## Key Features
@@ -139,6 +140,10 @@ Whichever tag you pull — `latest` or a pinned `vX.Y.Z` release — you're gett
 - Feel free to open a new issue if you encounter the toolkit bug or want to request more content about DevOps toolkit
 - Submit a [new issue](https://github.com/tungbq/devops-toolkit/issues/new) (🐛) if you encounter the bug/error when using this toolkit
 
+## License 📄
+
+Licensed under the [Apache License, Version 2.0](./LICENSE). You're free to use, modify, and distribute this project, including commercially, provided you retain the copyright notice and state significant changes. The license also grants an explicit patent license from contributors and includes the standard "AS IS" warranty disclaimer.
+
 ## Hit the Star! ⭐
 
 - If you find this repository helpful, kindly consider showing your appreciation by giving it a star ⭐ Thanks! 💖