Update doc to add docker installation

README.md

@@ -18,6 +18,9 @@ All commands shall be ran at the application's root unless otherwise specified.
 - Run `composer install` to install back-end dependencies
 - Run `npm install` to install front-end dependencies
 
+You can also install Airlines using [Docker](https://www.docker.com/). If you are interested in using this method, just
+follow the [guide](doc/docker_installation.md).
+
 ### Development
 
 - Run `cp open.json.dist open.json` and edit the latter to define the app's root URL

doc/docker_installation.md

@@ -0,0 +1,22 @@
+# Docker installation
+
+To run Airlines in Docker, you need to install Docker and check that the version is greater than 1.2.
+
+To verify your version, run:  
+```sh
+sudo docker --version
+```
+
+To upgrade your docker version or to install it, take a look at
+[this section](https://docs.docker.com/installation/ubuntulinux/#docker-maintained-package-installation)
+of the docker installation guide.
+
+Once you are done with this, you can build your image and run your container:  
+```sh
+sudo docker build -t airlines .  
+sudo docker run airlines  
+sudo docker inspect $(sudo docker ps | grep airlines | awk '{ print $(NF) }') | grep IPAddress
+```
+
+It will output the IP address of your container. Now, you just have to open a browser, paste the address
+and choose app.php or app_dev.php.