1. Option to let delete existing files

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: Continuous Deploy #action名称
+on: [push] #在推送的时候运行此action
+
+jobs:
+  deploy_job:
+    runs-on: ubuntu-latest  #运行环境
+    name: sftp
+    steps:
+      - name: Checkout    
+        uses: actions/checkout@v2 
+
+      # 利用action把build好的文件上传到服务器/var/www/react-app路径下,需要确认此目录已在服务端创建
+      - name: deploy file to server
+        uses:  ./ # Uses an action in the root directory
+        with:  
+          username: 'root'   #ssh user name
+          server: '${{ secrets.SERVER_IP }}'
+          ssh_private_key: ${{ secrets.SSH_PRIVATE_KEY }}
+          local_path: './action.yml'  # 对应我们项目build的文件夹路径
+          remote_path: '/var/www/react-app/'
+          delete_remote_files: true