ci: fix actions in docker push (#191)

Signed-off-by: yiyiyimu <wosoyoung@gmail.com>
diff --git a/.github/workflows/apisix_push_docker_hub.yaml b/.github/workflows/apisix_push_docker_hub.yaml
index faa5925..1a1a0e5 100644
--- a/.github/workflows/apisix_push_docker_hub.yaml
+++ b/.github/workflows/apisix_push_docker_hub.yaml
@@ -16,9 +16,9 @@
         uses: actions/checkout@v2
 
       - name: Login
-        run: echo ${{ secrets.DOCKER_PASSWORD }} | docker login --username=${{ secrets.DOCKER_USERNAME }} --password-stdin
+        run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login --username=${{ secrets.DOCKERHUB_USER }} --password-stdin
 
       - name: Push apisix image to Docker Hub
-        run:
+        run: |
           make build-on-${{ matrix.platform }}
           make push-on-${{ matrix.platform }}
diff --git a/.github/workflows/dashboard_push_docker_hub.yaml b/.github/workflows/dashboard_push_docker_hub.yaml
index 87d2a0c..7a71292 100644
--- a/.github/workflows/dashboard_push_docker_hub.yaml
+++ b/.github/workflows/dashboard_push_docker_hub.yaml
@@ -11,9 +11,9 @@
         uses: actions/checkout@v2
 
       - name: Login
-        run: echo ${{ secrets.DOCKER_PASSWORD }} | docker login --username=${{ secrets.DOCKER_USERNAME }} --password-stdin
+        run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login --username=${{ secrets.DOCKERHUB_USER }} --password-stdin
 
       - name: Push apisix dashboard image to Docker Hub
-        run:
+        run: |
           make build-on-dashboard
           make push-on-dashboard
diff --git a/example/apisix_conf/config.yaml b/example/apisix_conf/config.yaml
index fc22e1b..663e37d 100644
--- a/example/apisix_conf/config.yaml
+++ b/example/apisix_conf/config.yaml
@@ -19,4 +19,3 @@
     - "http://etcd:2379"     # multiple etcd address
   prefix: "/apisix"               # apisix configurations prefix
   timeout: 30                     # 30 seconds
-