Add Windows examples for hostPath

Allow seeing an example of hostPath on Linux and on Windows

Author: Tim Bannister

content/en/docs/concepts/storage/volumes.md

@@ -421,28 +421,64 @@ or modify the file permissions on the host to be able to read from
 
 #### hostPath configuration example
 
-This manifest mounts `/data` on the host as `/test-pd` inside the
-single container that runs within the `test-pd` Pod:
-
-```yaml
+{{< tabs name="hostpath_examples" >}}
+{{< tab name="Linux node" codelang="yaml" >}}
+---
+# This manifest mounts /data/foo on the host as /foo inside the
+# single container that runs within the hostpath-example-linux Pod.
+#
+# The mount into the container is read-only.
 apiVersion: v1
 kind: Pod
 metadata:
-  name: test-pd
+  name: hostpath-example-linux
 spec:
+  os: { name: linux }
+  nodeSelector:
+    kubernetes.io/os: linux
   containers:
-  - image: registry.k8s.io/test-webserver
-    name: test-container
+  - name: example-container
+    image: registry.k8s.io/test-webserver
     volumeMounts:
-    - mountPath: /test-pd
-      name: test-volume
+    - mountPath: /foo
+      name: example-volume
+      readOnly: true
   volumes:
-  - name: test-volume
+  - name: example-volume
+    # mount /data/foo, but only if that directory already exists
     hostPath:
-      path: /data # directory location on host
+      path: /data/foo # directory location on host
       type: Directory # this field is optional
-```
-
+{{< /tab >}}
+{{< tab name="Windows node" codelang="yaml" >}}
+---
+# This manifest mounts C:\Data\foo on the host as C:\foo, inside the
+# single container that runs within the hostpath-example-windows Pod.
+#
+# The mount into the container is read-only.
+apiVersion: v1
+kind: Pod
+metadata:
+  name: hostpath-example-windows
+spec:
+  os: { name: windows }
+  nodeSelector:
+    kubernetes.io/os: windows
+  containers:
+  - name: example-container
+    image: microsoft/windowsservercore:1709
+    volumeMounts:
+    - name: example-volume
+      mountPath: "C:\\foo"
+      readOnly: true
+  volumes:
+    # mount C:\Data\foo from the host, but only if that directory already exists
+  - name: example-volume
+    hostPath:
+      path: "C:\\Data\\foo" # directory location on host
+      type: Directory       # this field is optional
+{{< /tab >}}
+{{< /tabs >}}
 
 #### hostPath FileOrCreate configuration example {#hostpath-fileorcreate-example}
 
@@ -465,6 +501,9 @@ kind: Pod
 metadata:
   name: test-webserver
 spec:
+  os: { name: linux }
+  nodeSelector:
+    kubernetes.io/os: linux
   containers:
   - name: test-webserver
     image: registry.k8s.io/test-webserver:latest