fix(ci): accept 404 from Gateway root endpoint as healthy

Author: ledai091

.github/workflows/phase4-ci.yml

@@ -158,14 +158,33 @@ jobs:
         run: docker compose -f docker/phases/docker-compose.phase4.yml up -d
 
       - name: Wait for services to be ready
-        run: sleep 45
+        run: |
+          echo "Waiting for services to start..."
+          sleep 45
+          echo "Checking service health..."
+          docker compose -f docker/phases/docker-compose.phase4.yml ps
 
       - name: Run E2E health checks
         run: |
-          echo "Testing Gateway..."
-          curl -f http://localhost:5000 || exit 1
+          echo "Testing Gateway (expecting 404 is OK - Gateway has no root route)..."
+          HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:5000)
+          if [ "$HTTP_CODE" == "404" ] || [ "$HTTP_CODE" == "200" ]; then
+            echo "Gateway is responding! (HTTP $HTTP_CODE)"
+          else
+            echo "Gateway returned unexpected code: $HTTP_CODE"
+            exit 1
+          fi
+
           echo "Testing Web..."
-          curl -f http://localhost:5008 || exit 1
+          for i in {1..10}; do
+            if curl -f http://localhost:5008; then
+              echo "Web is ready!"
+              break
+            fi
+            echo "Attempt $i: Web not ready yet, waiting..."
+            sleep 5
+          done
+
           echo "All services are healthy!"
 
       - name: Run E2E tests (if exists)