Deploy to gh-pages step

Author: aaronamm

.github/workflows/build-cra.yml

@@ -26,4 +26,9 @@ jobs:
           yarn install
           yarn build
 
-      
+      - name: Deploy to gh-pages
+        # https://github.com/peaceiris/actions-gh-pages/releases
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          deploy_key: ${{ secrets.PUBLIC_REPO_ACCESS_TOKEN }}
+          publish_dir: ./build