fix docker login user

Author: submarcos

.github/workflows/test.yml

@@ -229,7 +229,7 @@ jobs:
       - name: Login to Docker Hub
         uses: docker/login-action@v1
         with:
-          username: ${{ secrets.DOCKER_USER }}
+          username: ${{ secrets.DOCKER_LOGIN }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Publish docker image
         run: |