Adds middlewares examples for k8s.

docs/content/middlewares/forwardauth.md

@@ -11,21 +11,6 @@ Otherwise, the response from the authentication server is returned.
 
 ## Configuration Examples
 
-```toml tab="File"
-# Forward authentication to authserver.com
-[http.middlewares]
-  [http.middlewares.test-auth.forwardauth]
-    address = "https://authserver.com/auth"
-    trustForwardHeader = true
-    authResponseHeaders = ["X-Auth-User", "X-Secret"]
-
-    [http.middlewares.test-auth.forwardauth.tls]
-      ca = "path/to/local.crt"
-      caOptional = true
-      cert = "path/to/foo.cert"
-      key = "path/to/foo.key"      
-```
-
 ```yaml tab="Docker"
 # Forward authentication to authserver.com
 labels:
@@ -39,20 +24,54 @@ labels:
 - "traefik.http.middlewares.test-auth.ForwardAuth.TrustForwardHeader=true"
 ```
 
+```yaml tab="Kubernetes"
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: test-auth
+spec:
+  forwardAuth:
+    address: https://authserver.com/auth
+    trustForwardHeader: true
+    authResponseHeaders:
+    - X-Auth-User
+    - X-Secret
+    tls:
+      ca: path/to/local.crt
+      caOptional: true
+      cert: path/to/foo.cert
+      key: path/to/foo.key  
+```
+
+```toml tab="File"
+# Forward authentication to authserver.com
+[http.middlewares]
+  [http.middlewares.test-auth.forwardAuth]
+    address = "https://authserver.com/auth"
+    trustForwardHeader = true
+    authResponseHeaders = ["X-Auth-User", "X-Secret"]
+
+    [http.middlewares.test-auth.forwardauth.tls]
+      ca = "path/to/local.crt"
+      caOptional = true
+      cert = "path/to/foo.cert"
+      key = "path/to/foo.key"
+```
+
 ## Configuration Options
 
-### address
+### `address`
 
 The `address` option defines the authentication server address.
 
-### trustForwardHeader
+### `trustForwardHeader`
 
 Set the `trustForwardHeader` option to true to trust all the existing X-Forwarded-* headers.
 
-### authResponseHeaders
+### `authResponseHeaders`
 
 The `authResponseHeaders` option is the list of the headers to copy from the authentication server to the request.
 
-### tls
+### `tls`
 
 The `tls` option is the tls configuration from Traefik to the authentication server.