zh_Trans: Fix preview issue (#11311)

* zh_trans: kubeadm-upgrade-1-12.md

* update file

* Update _index.md

* Delete _index.md

* Update kubeadm-upgrade-1-12.md

* zh_trans: docs/reference/setup-tools/kubeadm/generated/kubeadm_config.md

* Update kubeadm_config.md

* zh_trans: fix Preview

* zh_trans: fix Preview

content/zh/examples/application/job/redis/Dockerfile

@@ -0,0 +1,6 @@
+FROM python
+RUN pip install redis
+COPY ./worker.py /worker.py
+COPY ./rediswq.py /rediswq.py
+
+CMD  python worker.py