Add redirect file copy to build process in GitHub Actions

Author: whyhugo

.github/workflows/build.yaml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Build
-        run: cd my-app && npm i && npm run build && mkdir -p deploy/2023 && cp -r build/* deploy/2023/
+        run: cd my-app && npm i && npm run build && mkdir -p deploy/2023 && cp -r build/* deploy/2023/ && cp public/_redirects deploy/
 
       - name: Deploy to Cloudflare Pages
         uses: cloudflare/pages-action@v1