add manual approval before deployment

Author: kada2004

.github/workflows/ci_cd.yaml

@@ -68,6 +68,12 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
 
+    environment: production   # manual approval before deployment
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    permissions:
+      actions: read
+      contents: read
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4