added routes package and serve in server package

backend/server/serve.go

@@ -0,0 +1,29 @@
+package server
+
+import (
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func Serve(app *fiber.App) {
+	enableTls, err := strconv.ParseBool(os.Getenv("ENABLE_TLS"))
+	if err != nil {
+		log.Fatalf("error read tls configuration, %v", err)
+	}
+	if enableTls {
+		log.Fatal(
+			app.ListenTLS(
+				os.Getenv("HTTP_ADDRESS"),
+				os.Getenv("CERT_FILE"),
+				os.Getenv("KEY_FILE"),
+			),
+		)
+	} else {
+		log.Fatal(
+			app.Listen(os.Getenv("HTTP_ADDRESS")),
+		)
+	}
+}