Update README.md

Author: sir-gon

README.md

@@ -28,6 +28,7 @@ Developed with TDD.
 [![Javascript](https://img.shields.io/badge/JavaScript-F7DF1E?style=for-the-badge&logo=javascript&logoColor=black)](https://tc39.es/)
 [![Node.js](https://img.shields.io/badge/Node.js-43853D?style=for-the-badge&logo=node.js&logoColor=white)](https://nodejs.org/)
 [![Jest](https://img.shields.io/badge/Jest-323330?style=for-the-badge&logo=Jest&logoColor=white)](https://jestjs.io/)
+[![Docker](https://img.shields.io/badge/docker-%230db7ed.svg?style=for-the-badge&logo=docker&logoColor=white)](https://www.docker.com/)
 
 Go to [Install and run](#install-and-run)