move user docs to their new home

docs/user-guide/liveness/image/Dockerfile

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+FROM scratch
+
+ADD server /server
+

docs/user-guide/liveness/image/Makefile

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+all: push
+
+server: server.go
+	CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags '-w' ./server.go
+
+container: server
+	docker build -t gcr.io/google_containers/liveness .
+
+push: container
+	gcloud docker push gcr.io/google_containers/liveness
+
+clean:
+	rm -f server

docs/user-guide/liveness/image/server.go

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+/*
+Copyright 2014 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// A simple server that is alive for 10 seconds, then reports unhealthy for
+// the rest of its (hopefully) short existence.
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+)
+
+func main() {
+	started := time.Now()
+	http.HandleFunc("/started", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(200)
+		data := (time.Now().Sub(started)).String()
+		w.Write([]byte(data))
+	})
+	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
+		duration := time.Now().Sub(started)
+		if duration.Seconds() > 10 {
+			w.WriteHeader(500)
+			w.Write([]byte(fmt.Sprintf("error: %v", duration.Seconds())))
+		} else {
+			w.WriteHeader(200)
+			w.Write([]byte("ok"))
+		}
+	})
+	log.Fatal(http.ListenAndServe(":8080", nil))
+}