fixed duplicate nameing

.drone.yml

@@ -14,12 +14,13 @@ steps:
       - cd backend
       - yarn
       - yarn lib
-  - name: checkout backend
+  - name: push new dist
     image: alpine/git
     commands:
       - rm -rf ./dist ./openapi.json
       - mv ./backend/lib/dist ./dist
       - mv ./backend/lib/openapi.json ./openapi.json
+      - rm -rf ./backend
       - git add -A
       - git commit -m "new lib version [CI SKIP]"
       - git push