diff --git a/configBuilder.sh b/configBuilder.sh
index c49122c..f49517c 100755
--- a/configBuilder.sh
+++ b/configBuilder.sh
@@ -511,8 +511,11 @@ echo ""
 echo "Creating sanitized config for hybrid build..."
 echo ""
 destPath=./ConfigNoSecrets
-cp -rf `realpath ${PWD}`/. $destPath >/dev/null 2>>/dev/null
-mkdir -p ./ConfigNoSecrets/SECRETS
+destPathName=ConfigNoSecrets
+# check for rsync
+command -v rsync >/dev/null 2>&1 || { echo >&2 "ERROR: rsync is required, but doesn't appear to be installed.  Aborting..."; exit 1; }
+rsync -a . ${destPath} --exclude ${destPathName}
+mkdir -p ${destPath}/SECRETS
 
 # move secrets
 mv -f $destPath/config/shib-idp/conf/idp.properties $destPath/SECRETS/idp.properties > /dev/null