Added docker docs

Author: dbrgn

README.md

@@ -6,6 +6,7 @@ A web multiplayer Tron game like with curves
 ## Installation
 
 * [Get your local Curvytron server in 1 minute!](doc/installation.md)
+* [...or launch a Docker container with the game!](doc/docker.md)
 
 ---
 

doc/docker.md

@@ -0,0 +1,23 @@
+## Prerequisite
+
+You need to install Docker.
+
+## Building an Image
+
+__Clone the repository__
+
+    git clone https://github.com/Elao/curvytron.git
+    cd curvytron
+
+__Build the docker image__
+
+    docker build -t yourname/curvytron .
+
+## Launch server
+
+    docker run -d --name curvytron -p 8080:8080 yourname/curvytron
+
+## Play
+
+Go to [http://localhost:8080](http://localhost:8080/)
+Join a room, choose a player name and play!

doc/installation.md

@@ -3,6 +3,8 @@
 Curvytron runs on [node.js >= v0.10](https://nodejs.org/).
 You need to install node on the machine that will run the Curvytron server.
 
+Alternatively, you could also [run Curvytron on Docker](doc/docker.md).
+
 ## Installation
 
 __Clone the repository__