deploy scripts -> do images cleanup on end

Author: zurfyx

scripts/deploy.sh

@@ -19,7 +19,9 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
     git pull
     docker-compose pull
     docker-compose stop
-    docker-compose rm -f
+    docker-compose rm -f # Destroy outdated containers.
     docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
+    docker rm $(docker ps -a -q) # Destroy unused containers.
+    docker rmi $(docker images -q) # Destroy unused images.
 EOF
 )