[doc] Add a page for inject failure demo

site/content/en/docs/user/examples/injectfailure/_index.md

@@ -0,0 +1,31 @@
+---
+title: Inject Failure
+---
+
+# Inject Failure Demo
+
+{{< hint "info" >}}
+
+This is a demo that introduces how to inject fault to initContainer in an existing minikube cluster.
+
+{{< /hint >}}
+
+<img width="700px" src="init-container-error-injection.svg">
+
+{{< expand "Demo Detail Steps" >}}
+
+{{< code-sample file="init-container-error-injection.demo" language="bash" >}}
+
+{{< /expand >}}
+
+{{< expand "virtual-gpu-node.yaml" >}}
+
+{{< code-sample file="virtual-gpu-node.yaml" >}}
+
+{{< /expand >}}
+
+{{< expand "failed-pod.yaml" >}}
+
+{{< code-sample file="failed-pod.yaml" >}}
+
+{{< /expand >}}