Move the lock check until after the arg parser

command

@@ -2,11 +2,6 @@
 BUILD=${BUILD:=default}
 LAB=${LAB:=0}
 
-[ -r .lock${LAB} ] && {
-  echo "Lock file for LAB${LAB}, bailing"
-  exit
-}
-
 ## Do not touch below this line
 LABDIR=/var/lab
 STAGING=$LABDIR/staging
@@ -18,6 +13,11 @@ CMD=$1
   exit
 }
 
+[ -r .lock${LAB} ] && {
+  echo "Lock file for LAB${LAB}, bailing"
+  exit
+}
+
 VMS=$(ls -1 build/${BUILD}/${HVN}/)
 
 for VM in $VMS; do