reverse sorting private params when injecting

shared/build/script/inject.go

@@ -1,6 +1,7 @@
 package script
 
 import (
+	"sort"
 	"strings"
 )
 
@@ -8,8 +9,14 @@ func Inject(script string, params map[string]string) string {
 	if params == nil {
 		return script
 	}
+	keys := []string{}
+	for k, _ := range params {
+		keys = append(keys, k)
+	}
+	sort.Sort(sort.Reverse(sort.StringSlice(keys)))
 	injected := script
-	for k, v := range params {
+	for _, k := range keys {
+		v := params[k]
 		injected = strings.Replace(injected, "$$"+k, v, -1)
 	}
 	return injected