diff --git a/README.md b/README.md
index 6eae0f9..5a25961 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,51 @@
-## Build
+## About
 
-```bash
-git clone https://github.com/dbarton/docker-couchpotato.git
-cd docker-couchpotato
-docker build -t <tag> .
+This is a Docker image for [CouchPotato](https://couchpota.to/) - the awesome movie PVR for usenet and torrents.
+
+## Configuration
+
+### Volumes
+
+Mount the following volumes inside your container:
+
+* `<datadir path>:/datadir`
+* `<media path>:/media`
+
+### Configuration file
+
+By default the CouchPotato configuration is located on:
+
+```
+/datadir/config.ini
 ```
 
+If you want to change this, set the `CONFIG` environment variable.
+
+### CouchPotato Version
+
+By default the latest CouchPotato version will be used by pointing at the `master` tree of the [CouchPotato git repository](https://github.com/RuudBurger/CouchPotatoServer).
+If you want a different version you've set the `VERSION` environment variable to a valid git branch or tag.
+
+_Please note that CouchPotato will automatically be updated when you restart your container._
+
 ## Run
 
+### Run via docker CLI
+
 ```bash
 docker run --name couchpotato -v <datadir path>:/datadir -v <media path>:/media dbarton/couchpotato
 ```
+
+### Run via docker-compose
+
+```yaml
+sabnzbd:
+    image: "dbarton/couchpotato"
+    container_name: "couchpotato"
+    volumes:
+        - "<datadir path>:/datadir"
+        - "<media path>:/media"
+    tty: true
+    stdin_open: true
+    restart: always
+```
\ No newline at end of file
diff --git a/start.sh b/start.sh
index 0fc2bf0..09a10e4 100644
--- a/start.sh
+++ b/start.sh
@@ -1,7 +1,14 @@
 #!/bin/sh
 
-echo 'Updating CouchPotato...'
+if [[ -n "${VERSION}" ]]
+then
+    echo "Checking out SABnzbd version '${VERSION}'..."
+    git checkout ${VERSION}
+fi
+
+echo "Updating CouchPotato..."
 git pull
 
-echo 'Starting CouchPotato...'
-exec ./CouchPotato.py --data_dir=/datadir --config_file=/datadir/config.ini
+CONFIG=${CONFIG:-/datadir/config.ini}
+echo "Starting CouchPotato with config '${CONFIG}'..."
+exec ./CouchPotato.py --data_dir=/datadir --config_file=${CONFIG}