diff --git a/build-ubunturepo b/build-ubunturepo
index 63e047514..1dc4d6c82 100755
--- a/build-ubunturepo
+++ b/build-ubunturepo
@@ -99,6 +99,27 @@ else
     tar_name="core-debs-snap.tar.bz2"
 fi
 
+#use flock to only one person build at the same time
+# Get a lock, so can not do 2 builds at once
+exec 8>/var/lock/xcatbld.lock
+if ! flock -n 8; then
+    echo "Can't get lock /var/lock/xcatbld.lock.  Someone else must be doing a build right now.  Exiting...."
+    exit 1
+fi
+
+export HOME=/root
+
+#sync the gpg key to the build machine local
+gsa_url=http://pokgsa.ibm.com/projects/x/xcat/build/linux
+mkdir -p $HOME/.gnupg
+for key_name in pubring.gpg secring.gpg trustdb.gpg; do
+    if [ ! -f $HOME/.gnupg/$key_name ] || [ `wc -c $HOME/.gnupg/$key_name|cut -f 1 -d' '` == 0 ]; then
+        rm -f $HOME/.gnupg/$key_name
+        wget -P $HOME/.gnupg $GSA/keys/$key_name
+        chmod 600 $HOME/.gnupg/$key_name
+    fi
+done
+
 if [ "$c_flag" ]
 then
     # strip the /src/xcat-core from the end of the dir to get the next dir up and use as the release
@@ -157,7 +178,7 @@ then
             rm -f ../../debs/${file_low}-amd64_*.deb
             cd $file
             dch -v $pkg_version -b -c debian/changelog $build_string
-            dpkg-buildpackage
+            dpkg-buildpackage -uc -us
             rc=$?
             if [ $rc -gt 0 ]; then
                 echo "Error: $file build package failed exit code $rc"
@@ -191,12 +212,14 @@ Codename: $dist
 Architectures: amd64 i386 
 Components: main
 Description: Repository automatically genereted conf 
+SignWith: yes
 
 __EOF__
      done
 
     cat << __EOF__ > conf/options
 verbose
+ask-passphrase
 basedir .
 __EOF__
 
@@ -287,12 +310,14 @@ Codename: $dist
 Architectures: i386 amd64 
 Components: main
 Description: Repository automatically genereted conf 
+SignWith: yes
 
 __EOF__
     done
 
     cat << __EOF__ > conf/options
 verbose
+ask-passphrase
 basedir .
 __EOF__