diff --git a/run-test-frontend.sh b/run-test-frontend.sh
index 56229a6..0ea4759 100755
--- a/run-test-frontend.sh
+++ b/run-test-frontend.sh
@@ -58,8 +58,9 @@ echo "📦 Using compose file: $COMPOSE_FILE"
 echo "🧹 Cleaning up previous containers..."
 docker compose -f "$COMPOSE_FILE" down -v 2>/dev/null || true
 
-# Build frontend with correct API base URL (force no cache)
+# Build frontend with correct API base URL (force no cache, remove image first)
 echo "🔨 Building frontend..."
+docker rmi harborforge-test-frontend:dev 2>/dev/null || true
 docker compose -f "$COMPOSE_FILE" build --no-cache --build-arg VITE_API_BASE=http://backend:8000 frontend
 
 # Start services
@@ -87,7 +88,7 @@ echo "✅ Services ready!"
 
 # Run test
 echo "🧪 Running test..."
-docker compose -f "$COMPOSE_FILE" run --rm test
+docker compose -f "$COMPOSE_FILE" run --rm -e WORKERS=1 test
 TEST_EXIT_CODE=$?
 
 # Cleanup decision based on expose-port