Added Licence

CONTRIBUTING.md

@@ -110,3 +110,16 @@ When opening a new issue, try to roughly follow the commit message format conven
 ## Finding Contributions to Work On
 
 Looking at the existing issues is a great way to find something to contribute on. If you have an idea you'd like to discuss, [open a discussion](https://github.com/MichaelCade/90DaysOfDevOps/discussions).
+
+## License
+
+Shield: [![CC BY-NC-SA 4.0][cc-by-nc-sa-shield]][cc-by-nc-sa]
+
+This work is licensed under a
+[Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License][cc-by-nc-sa].
+
+[![CC BY-NC-SA 4.0][cc-by-nc-sa-image]][cc-by-nc-sa]
+
+[cc-by-nc-sa]: http://creativecommons.org/licenses/by-nc-sa/4.0/
+[cc-by-nc-sa-image]: https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png
+[cc-by-nc-sa-shield]: https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-lightgrey.svg