DodoApp: Cache static resources.

Change-Id: Ib1f800ea052c5f3b7929a1d325b351dfa0a6633e
diff --git a/core/installer/welcome/env.go b/core/installer/welcome/env.go
index 4c084cd..356e47c 100644
--- a/core/installer/welcome/env.go
+++ b/core/installer/welcome/env.go
@@ -131,7 +131,7 @@
 
 func (s *EnvServer) Start() {
 	r := mux.NewRouter()
-	r.PathPrefix("/static/").Handler(cachingHandler{http.FileServer(http.FS(staticAssets))})
+	r.PathPrefix("/stat/").Handler(cachingHandler{http.FileServer(http.FS(statAssets))})
 	r.Path("/env/{key}").Methods("GET").HandlerFunc(s.monitorTask)
 	r.Path("/env/{key}").Methods("POST").HandlerFunc(s.publishDNSRecords)
 	r.Path("/").Methods("GET").HandlerFunc(s.createEnvForm)