reinstall mkdocs

.drone.yml

@@ -10,8 +10,7 @@ steps:
     path: /site
   commands:
 #  - pip install -U -r ./requirements.txt
-  - pip install -U mkdocs
-  - cat ./mkdocs.yml
+  - pip install --force-reinstall mkdocs
   - mkdocs build --clean -f ./mkdocs.yml
   - cp -r site/ /site
   - chmod -R 777 /site