Fix deploy-backend workflow: separate build and deploy phases

- Build & push images: Only on PR creation/updates (not on merge)
- Deploy to production: Only on merge to main branch or manual trigger
- Improved workflow clarity with emojis and better step descriptions
- Added deployment progress logging for better visibility
- Fixed workflow logic to prevent unnecessary builds on merge

This ensures:
✅ PR creates/updates → Build and push Docker images
✅ Merge to main → Deploy using pre-built images
✅ Manual deployment → Deploy latest images

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/deploy-backend.yml

@@ -1,42 +1,55 @@
 name: Deploy Backend API
 
 on:
+  # Build and push on PR creation/update
   pull_request:
-    types: [closed]
     branches:
       - main
       - master
+    types: [opened, synchronize, reopened]
+  
+  # Deploy on merge to main
+  push:
+    branches:
+      - main
+      - master
+  
+  # Allow manual deployment
   workflow_dispatch:
 
 jobs:
   build-and-push:
-    # Only run if PR was merged or manually triggered
-    if: github.event_name == 'workflow_dispatch' || (github.event.pull_request.merged == true)
+    name: 🔨 Build & Push Images (PR Only)
+    # Only run on PR events (not on push to main)
+    if: github.event_name == 'pull_request'
     runs-on: ubuntu-latest
     
     steps:
-      - name: Checkout code
+      - name: 📥 Checkout code
         uses: actions/checkout@v4
       
-      - name: Set up Docker Buildx
+      - name: 🔧 Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       
-      - name: Login to Docker Hub
+      - name: 🔐 Login to Docker Hub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       
-      - name: Build and push API image using Makefile
+      - name: 🏗️ Build and push API image
         run: |
+          echo "Building and pushing API image for PR #${{ github.event.number }}"
           make build-push-api
 
   deploy:
-    needs: build-and-push
+    name: 🚀 Deploy to Production (Main Branch Only)
+    # Only run on push to main (merge) or manual trigger
+    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     
     steps:
-      - name: Deploy to Production Server
+      - name: 🚀 Deploy to Production Server
         uses: appleboy/ssh-action@v1.0.3
         with:
           host: qingsu.chat
@@ -44,12 +57,23 @@ jobs:
           key: ${{ secrets.SSH_PRIVATE_KEY }}
           port: 22
           script: |
+            echo "🚀 Starting deployment to production server..."
             cd /root/projects/jim-dify
+            
+            echo "📦 Updating source code..."
             git fetch origin
             git reset --hard origin/$(git branch --show-current)
+            
+            echo "🐳 Updating Docker images..."
             cd docker
             export HTTP_PROXY=http://host.docker.internal:1081
             export HTTPS_PROXY=http://host.docker.internal:1081
             export NO_PROXY=weaviate,sandbox,plugin_daemon,localhost,127.0.0.1
+            
+            # Pull latest images (built from the merged PR)
             docker compose pull
+            
+            echo "🔄 Restarting services..."
             docker compose up -d --force-recreate nginx web api worker scheduler
+            
+            echo "✅ Deployment completed successfully!"