Make dokku play nice when we have multiple receive-app hooks in various plugins.

plugins/git/commands

@@ -37,7 +37,7 @@ case "$1" in
       # if block if you wish to run it for others as well.
       if [[ $refname = "refs/heads/master" ]] ; then
         # broken out into pluginhook so we might support other methods to receive an app
-        pluginhook receive-app $APP $newrev
+        pluginhook -p receive-app $APP $newrev
       else
         if test -f "$PLUGIN_PATH"/enabled/*/receive-branch; then
           pluginhook receive-branch $APP $newrev $refname

plugins/git/receive-app

@@ -4,4 +4,9 @@ source "$(dirname $0)/../common/functions"
 
 APP="$1"; REV="$2"
 
-dokku git-build $APP $REV
+# Don't trigger git build if there is no git repository.
+if [ ! -d "$DOKKU_ROOT/$APP/refs" ]; then
+  cat
+else
+  dokku git-build $APP $REV
+fi

plugins/ps/commands

@@ -49,7 +49,7 @@ case "$1" in
     verify_app_name "$2"
     APP="$2"
 
-    pluginhook receive-app $APP
+    pluginhook -p receive-app $APP
   ;;
 
   ps:rebuildall)