Fix missing host setting and fix tests

handlers/home.go

@@ -17,6 +17,7 @@ func Home(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if s.Stack != "" {
+		s.Host = r.Host
 		go core.SessionDeployStack(s)
 	}
 

handlers/session_setup.go

@@ -26,6 +26,7 @@ func SessionSetup(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 
+	s.Host = req.Host
 	err := core.SessionSetup(s, body)
 	if err != nil {
 		log.Println(err)