A single-page application made with react+webpack, and then every time you update the code with cdn, you swipe cdn, but the user opens the browser directly to visit the site, still using the old code, but the page can be refreshed. At this time, close the browser and open it again, or you will only access the old code. I want index.html as an entry not to be cached by the browser, and to get the latest code every time, what to do.