add: transfer build files

.github/workflows/transfer-build-files.yml

@@ -0,0 +1,40 @@
+name: Transfer Build Files
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./all_in_docker/client
+
+    steps:
+    - name: Checkout Repository
+      uses: actions/checkout@v2
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+
+    - name: Install Dependencies
+      run: npm install
+
+    - name: Build Application
+      run: |
+        CI=false npm run build
+    - name: List build directory contents
+      run: ls -la build
+
+    - name: Setup SSH
+      uses: shimataro/ssh-key-action@v2
+      with:
+        key: ${{ secrets.SSH_PRIVATE_KEY }}
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
+
+    - name: Transfer Build Files to Ubuntu Instance
+      r