Update README.md

Author: atsanna

README.md

@@ -1,4 +1,4 @@
-# codeigniter4-docker
+## Docker Image for CodeIgniter4 development
 [![Docker Build Status](https://img.shields.io/docker/cloud/build/atsanna/codeigniter4.svg?style=flat-square)](https://hub.docker.com/r/atsanna/codeigniter4/)
 
 This repository provides you a development environment without requiring you to install PHP, a web server, and any other server software on your local machine. For this, it requires Docker and Docker Compose.
@@ -7,6 +7,8 @@ Basic example to create your container (tested on Ubuntu 18.04 - Docker version
 
 **NOTE: This package is under early development and is not ready for prime-time.**
 
+## Build Image
+
 create this structure:
 ```
 codeigniter/
@@ -29,3 +31,31 @@ start the container:
 ```
 docker container run --publish 80:80 --name ci4 -v /localfolder:/var/www/html codeginiter:4.0.2
 ```
+
+## Installation
+
+1. Install [docker](https://docs.docker.com/engine/installation/) and [docker-compose](https://docs.docker.com/compose/install/) ;
+
+2. Copy `docker-compose.yml` file to your project root path, and edit it according to your needs ;
+
+3. From your project directory, start up your application by running:
+
+```sh
+docker-compose up -d
+```
+
+4. From your project directory, stop your application by running:
+
+```sh
+docker-compose down --volumes
+```
+
+## Contributing
+
+Contributions are welcome!
+Leave an issue on Github, or create a Pull Request.
+
+
+## Licence
+
+This work is under [MIT](LICENCE) licence.