fixed typo.

forgot to swap ./regctl to $regbin within the RegHash-variable.

dockcheck.sh

@@ -63,7 +63,7 @@ do
 printf ". "
   RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
   LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
-  RegHash=$(./regctl image digest --list "$RepoUrl" 2>/dev/null)
+  RegHash=$($regbin image digest --list "$RepoUrl" 2>/dev/null)
   # Check if regtcl produces errors - add to GotErrors if so.
   if [ $? -eq 0 ] ; then
     if [[ "$LocalHash" = *"$RegHash"* ]] ; then