Update main.yml

.github/workflows/main.yml

@@ -9,10 +9,6 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
-      - name: Install dependencies & build Nest app
-        run: |
-          npm install
-          npm run build
       - name: Login to Docker Hub
         uses: docker/login-action@v1
         with: