add and test dockerfile build and run

main.go

@@ -40,7 +40,7 @@ func main() {
 	mux.Handle(core.RefreshToken, &handler)
 	mux.Handle(core.ResetNKode, &handler)
 	fmt.Println("Running on localhost:8080...")
-	log.Fatal(http.ListenAndServe("localhost:8080", corsMiddleware(mux)))
+	log.Fatal(http.ListenAndServe(":8080", corsMiddleware(mux)))
 }
 
 func corsMiddleware(next http.Handler) http.Handler {