diff --git a/debian-here.sh b/debian-here.sh
index b2863ad..6bdc099 100755
--- a/debian-here.sh
+++ b/debian-here.sh
@@ -16,11 +16,10 @@ IMAGE="${IMAGE:-debian-here}"
 
 
 run() {
-    if [[ ! -z "${BUILD:-}" ]];then
+    if [[ "$(docker images -q ${IMAGE} 2> /dev/null)" == "" ]];then
         pushd "$script_dir"
         docker build -t "$IMAGE" .
         popd
-        exit
     fi
 
     mount_point="/mnt/$(basename "$here")"