add config

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"astra-users/config"
 	"astra-users/handler"
 	"astra-users/model"
 	"github.com/labstack/echo/v4"
@@ -48,5 +49,5 @@ func main() {
 	e.DELETE("/:id", h.DeleteUser)
 	e.GET("/health", h.Health)
 
-	e.Logger.Fatal(e.Start(":8081"))
+	e.Logger.Fatal(e.Start(":" + config.Env.Server.Port))
 }