Update docker-image.yml

Author: stadie

.github/workflows/docker-image.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Docker Login
       uses: docker/login-action@v3
       with:
-        username: ${{ secrets.DOCKER_USERNAME }}
+        username: ${{ secrets.DOCKER_USER }}
         password: ${{ secrets.DOCKER_TOKEN }}
 
     - name: Build and export