chore: add check docker hub username step

Author: dev-everyday

.github/workflows/deploy.yml

@@ -57,6 +57,9 @@ jobs:
 
       - name: Extract Version from Tag
         run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_ENV
+        
+      - name: Print DOCKER_HUB_USERNAME
+        run: echo "DOCKER_HUB_USERNAME=${{ secrets.DOCKER_HUB_USERNAME }}"
 
       - name: Deploy to EC2
         run: |