Added check for argument

Author: rimi-itk

scripts/itkdev-docker-compose

@@ -266,20 +266,20 @@ if [[ "$#" -gt "0" && "$1" == "template:install" ]]; then
   exit
 fi
 
-# Allow enabled NFS without existence of docker-compose.yml.
-if [[ "$1" == "nfs:enable" ]]; then
+# Allow nfs:enable without existence of docker-compose.yml.
+if [[ "$#" -gt "0" && "$1" == "nfs:enable" ]]; then
   enableNFS
   exit
 fi
 
 # Allow version without existence of docker-compose.yml.
-if [[ "$1" == "version" ]]; then
+if [[ "$#" -gt "0" && "$1" == "version" ]]; then
   echo Version: ${VERSION}
   exit
 fi
 
 # Allow help without existence of docker-compose.yml.
-if [[ "$1" == "--help" ]]; then
+if [[ "$#" -gt "0" && "$1" == "--help" ]]; then
   usage
   exit
 fi