some refactoring

utils/LoadEnd.go

@@ -0,0 +1,14 @@
+package utils
+
+import (
+	"log"
+
+	"github.com/joho/godotenv"
+)
+
+func LoadEnv() {
+	err := godotenv.Load("/etc/dns_service/dns_service.conf")
+	if err != nil {
+		log.Fatal("Error loading .env file")
+	}
+}