auto generate openapi

.github/workflows/linux.yml

@@ -36,12 +36,13 @@ jobs:
     - name: generate openapi
       run: cd tools/openapi && python3 generates.py install-dependencies
 
-    - name: Commit and push if www/swagger/openapi.json changed
+    - name: Commit and push if ./www/swagger/openapi.json changed
       run: |
+          git diff --exit-code ./www/swagger/openapi.json || exit 0
           git config --global user.name "github-actions[bot]"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
-          git add www/swagger/openapi.json
+          git add ./www/swagger/openapi.json
           git commit -m "update openapi.json"
-          git push
+          git push origin HEAD:master