Add docker-registry example [ci skip]

docs/examples/docker-registry/ingress-without-tls.yaml

@@ -0,0 +1,18 @@
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  annotations:
+    ingress.kubernetes.io/proxy-body-size: "0"
+    ingress.kubernetes.io/proxy-read-timeout: "600"
+    ingress.kubernetes.io/proxy-send-timeout: "600"
+  name: docker-registry
+  namespace: docker-registry
+spec:
+  rules:
+  - host: registry.<your domain>
+    http:
+      paths:
+      - backend:
+          serviceName: docker-registry
+          servicePort: 5000
+        path: /