diff --git a/build b/build
index aba2dde..7c54652 100755
--- a/build
+++ b/build
@@ -103,6 +103,7 @@ while getopts ':b:d:t:ncr:u:pxhs:w:akvo' OPTION; do
   ;;  
   h)  
     exit_abnormal 0
+    return 0
   ;;
   *)  
       echo "unknown $0 option -$OPTARG"
@@ -120,7 +121,7 @@ RUSER=${3:-$RUSER}
 
 IMAGE_NAME=$([[ $RUSER ]] && echo ${RUSER}/)${name}$([[ (! $exclude_distro) && $name ]] && echo "-")$([[ ! $exclude_distro ]] && echo ${LINUX_DISTRO})
 # TODO writing to existing tag untags existing image so write a new tag to that image then continue
-# [[ $(image_exists $IMAGE_NAME) ]] && [[ ! $overwrite ]] && { echo local image \'$(make_tag $IMAGE_NAME)\' exists use -o to overwrite; return 1; }
+[[ $(image_exists $IMAGE_NAME) ]] && [[ ! $overwrite ]] && { echo local image \'$(make_tag $IMAGE_NAME)\' exists use -o to overwrite; return 1; }
 
 if [[ $BASE_IMAGE ]]; then
 echo determining DISTRO of base image: $BASE_IMAGE
diff --git a/install b/install
old mode 100644
new mode 100755
index e69de29..7ef0890
--- a/install
+++ b/install
@@ -0,0 +1,3 @@
+#!/bin/bash
+ln -nsf $(dirname "$(realpath "$BASH_SOURCE")")/build /opt/bin/dbuild
+dbuild -h
\ No newline at end of file