Updated Docker container on Ubuntu 16.04 LTS (markdown)

Docker-container-on-Ubuntu-16.04-LTS.md

@@ -47,7 +47,11 @@ sudo systemctl enable docker-radarr
 sudo systemctl start docker-radarr
 ```
 
-The first time you'll start the container it can take a while because it will need to download the docker image.
+The first time you'll start the container it can take a while because it will need to download the docker image. If you want to prevent this you can do a pull first with:
+
+```bash
+sudo docker pull linuxserver/radarr
+```
 
 Let's check if it's running: