Update so-curator-delete

salt/curator/files/bin/so-curator-delete

@@ -1,2 +1,12 @@
 #!/bin/bash
+
+APP=delete
+lf=/tmp/$APP-pidLockFile
+# create empty lock file if none exists
+cat /dev/null >> $lf
+read lastPID < $lf
+# if lastPID is not null and a process with that pid exists , exit
+[ ! -z "$lastPID" -a -d /proc/$lastPID ] && exit
+echo $$ > $lf
+
 docker exec so-curator curator --config /etc/curator/config/curator.yml /etc/curator/action/delete.yml > /dev/null 2>&1