update drone

.drone.yml

@@ -12,14 +12,17 @@ steps:
        - git submodule update
        - cd brainsteam
        - hugo
+       - cd ../
+       - git checkout public
+       - cd ../ && mv brainsteam/public/* .
+       - rm -rf brainsteam/
    - name: hugo_publish
      #image: alpine:3.12.3
      image: appleboy/drone-git-push
      settings:
        remote_name: origin
-       branch: master
-       local_ref: master
-       path: brainsteam/public/
+       branch: public
+       local_ref: public
        commit: true
        commit_message: update build from hugo
        author_name: DroneCI