Separate run command from main function

main.go

@@ -1,24 +1,9 @@
 package main
 
 import (
-	"fmt"
-	"net/http"
-
-	"github.com/fossyy/filekeeper/middleware"
-	"github.com/fossyy/filekeeper/routes"
-	"github.com/fossyy/filekeeper/utils"
+	"github.com/fossyy/filekeeper/app"
 )
 
 func main() {
-	serverAddr := fmt.Sprintf("%s:%s", utils.Getenv("SERVER_HOST"), utils.Getenv("SERVER_PORT"))
-	server := http.Server{
-		Addr:    serverAddr,
-		Handler: middleware.Handler(routes.SetupRoutes()),
-	}
-
-	fmt.Printf("Listening on http://%s\n", serverAddr)
-	err := server.ListenAndServe()
-	if err != nil {
-		return
-	}
+	app.Start()
 }