modify variables

Author: HEREYUA

.github/workflows/release-nightly.yml

@@ -83,8 +83,8 @@ jobs:
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          username: ${{ secrets.DOCKER_USERNAME}}
+          password: ${{ secrets.DOCKER_PASSWORD }}
       - name: fetch go modules
         run: make vendor
       - name: build rootful docker image