Improve README

README.md

@@ -1,5 +1,36 @@
 # BigBlueButton Docker
 
+## Dependencies
+
+This container depends on docker-ce.
+
+1 - Make sure you don't have docker installed:
+`sudo apt-get remove docker docker-engine docker.io`
+
+2 - Install docker-ce:
+```
+sudo apt-get update;
+sudo apt-get install \
+    apt-transport-https \
+    ca-certificates \
+    curl \
+    software-properties-common;
+
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+
+sudo add-apt-repository \
+   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
+   $(lsb_release -cs) \
+   stable"
+
+sudo apt-get update
+
+sudo apt-get install docker-ce
+
+sudo addgroup `whoami` docker
+
+```
+
 ## Setting up the SSL
 Generate a certificate to your container using letsencrypt and then copy your certificate to certs/ folder with the commands:
 ```