Update README.md

Author: s-shiryaev

README.md

@@ -1 +1,15 @@
-# nginx-unit-php
+# Nginx Unit PHP
+
+Docker image based on [nginx unit](https://unit.nginx.org/) image with php and and built-in extensions
+
+## Getting Started
+
+These instructions will cover usage information for the docker image
+
+### Usage
+
+Image based on [Unit](https://hub.docker.com/_/unit) so please read [Initial Configuration](https://unit.nginx.org/installation/#initial-configuration) for Unit docker images.
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.