refactor: Use pointers for controllers

router/controller/ping/controller.go

@@ -12,7 +12,7 @@ import (
 type Controller struct {
 }
 
-func (Controller) New() controller.Controller {
+func (*Controller) New() controller.Controller {
 	return &Controller{}
 }
 

router/controller/service/controller.go

@@ -16,7 +16,7 @@ type Controller struct {
 	serviceRepository repository.Service
 }
 
-func (c Controller) New() controller.Controller {
+func (c *Controller) New() controller.Controller {
 	return &Controller{
 		serviceRepository: repository.NewServiceRepository(),
 	}

router/server.go

@@ -17,8 +17,8 @@ import (
 
 func getControllers() []controller.Controller {
 	return []controller.Controller{
-		ping.Controller{}.New(),
+		new(ping.Controller).New(),
-		service.Controller{}.New(),
+		new(service.Controller).New(),
 	}
 }