Pretty up the demo a little.

Use images and some better formatting.  Also add scripts to help prevent typos.

This based on an improved version done by Julia Ferraioli.  She came up with the cool images.

examples/update-demo/images/base/Dockerfile

@@ -0,0 +1,22 @@
+# Copyright 2014 Google Inc. 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.
+
+FROM dockerfile/nginx
+
+ADD default /etc/nginx/sites-available/default
+
+ONBUILD ADD html /usr/share/nginx/html
+ONBUILD RUN chmod -R a+r /usr/share/nginx/html
+
+CMD ["nginx"]

examples/update-demo/images/base/default

@@ -0,0 +1,37 @@
+# Copyright 2014 Google Inc. 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.
+
+server {
+  listen 80 default_server;
+  listen [::]:80 default_server ipv6only=on;
+
+  root /usr/share/nginx/html;
+  index index.html index.htm;
+
+  # Make site accessible from http://localhost/
+  server_name localhost;
+
+  location / {
+    try_files $uri $uri/ =404;
+    expires           0;
+    add_header        Cache-Control private;
+
+    if ($request_method = 'GET') {
+      add_header 'Access-Control-Allow-Origin' '*';
+      add_header 'Access-Control-Allow-Credentials' 'true';
+      add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+      add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
+    }
+  }
+}

examples/update-demo/images/build-images.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Copyright 2014 Google Inc. 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.
+
+# This script will build and push the images necessary for the demo.
+
+if (( $# != 1 )); then
+  echo "Usage: $0 <docker hub user name>"
+  exit 1
+fi
+
+DOCKER_USER=$1
+
+set -x
+
+docker build -t update-demo-base base
+docker build -t $DOCKER_USER/update-demo:kitten kitten
+docker build -t $DOCKER_USER/update-demo:nautilus nautilus
+
+docker push $DOCKER_USER/update-demo

examples/update-demo/images/kitten/Dockerfile

@@ -0,0 +1,15 @@
+# Copyright 2014 Google Inc. 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.
+
+FROM update-demo-base

examples/update-demo/images/kitten/html/data.json

@@ -0,0 +1,3 @@
+{
+  "image": "kitten.jpg"
+}

examples/update-demo/images/nautilus/Dockerfile

@@ -0,0 +1,15 @@
+# Copyright 2014 Google Inc. 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.
+
+FROM update-demo-base

examples/update-demo/images/nautilus/html/data.json

@@ -0,0 +1,3 @@
+{
+  "image": "nautilus.jpg"
+}