Improve build script options error reporting

Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>

diff --git a/build-image.sh b/build-image.sh
index d18125af7b50d1c3adbd5d5625ef50919370af53..14efb6a7a0f0541ec4b6706e4c246c6cf0f2fd4d 100755 (executable)
--- a/build-image.sh
+++ b/build-image.sh
@@ -22,10 +22,20 @@ while getopts "n:h" option; do
       elif [[ -z "${images##*$name*}" ]]; then
         make NAME=${name}
       else
+        echo "Error: Unknown image name for option argument -${OPTARG}" >&2;
         usage
         exit 1
       fi
       ;;
+    \?)
+      # Invalid option
+      echo "Error: Unknown or invalid option argument for -${OPTARG}" >&2;
+      usage
+      exit 1;;
+    :)
+      echo "Error: Missing option argument for -${OPTARG}" >&2;
+      usage
+      exit 1;;
     *|h)
       usage
       ;;