chore(ci): fix the upload to S3 condition

.github/workflows/nodejs.yml

@@ -10,6 +10,20 @@ on:
     branches: [ main ]
 
 jobs:
+  init:
+    runs-on: ubuntu-latest
+    outputs:
+      env: ${{ steps.setEnv.outputs.env }}
+    steps:
+      - name: Set env variable
+        id: setEnv
+        run: |
+          if [[ "${{github.ref_name}}" == "main" ]]; then
+            echo "::set-output name=env::production"
+          else
+            echo "::set-output name=env::staging"
+          fi
+
   build:
     runs-on: ubuntu-latest
     strategy:
@@ -34,7 +48,7 @@ jobs:
         env:
           CI: true
       - name: Upload to S3 bucket
-        if: ${{ github.branch == 'main' }}
+        if: github.ref_name == 'main'
         uses: jakejarvis/s3-sync-action@master
         with:
           args: --delete