Added very important badges

Author: open-schnick

README.md

@@ -3,3 +3,4 @@ Backend REST API for FileFighter </br>
 ![Latest Release](https://github.com/FileFighter/RestApi/workflows/Latest%20Release/badge.svg)
 ![Stable Release](https://github.com/FileFighter/RestApi/workflows/Stable%20Release/badge.svg)
 [![codecov](https://codecov.io/gh/FileFighter/RestApi/branch/master/graph/badge.svg)](https://codecov.io/gh/FileFighter/RestApi)
+![Docker Pulls](https://img.shields.io/docker/pulls/filefighter/rest?logo=docker)