Add NodeBase function concept

sample-functions/NodeInfo/Dockerfile.func

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+FROM functions/nodebase:alpine-6.9.1
+
+COPY handler.js .

sample-functions/NodeInfo/build.func.sh

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+#!/bin/bash
+
+docker build -t functions/nodeinfo:func . -f Dockerfile.func

sample-functions/NodeInfo/handler.js

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+'use strict'
+let os = require('os');
+let fs = require('fs');
+let util = require('util');
+
+module.exports = (content, callback) => {
+    fs.readFile("/etc/hostname", "utf8", (err, data) => {
+        let val  = "";
+        val += "Hostname: " + data +"\n";
+        val += "Platform: " + os.platform()+"\n";
+        val += "Arch: " + os.arch() + "\n";
+        val += "CPU count: " + os.cpus().length+ "\n";
+
+        val += "Uptime: " + os.uptime()+ "\n";
+
+        if (content && content.length && content.indexOf("verbose") > -1) {
+            val += util.inspect(os.cpus()) + "\n";
+            val += util.inspect(os.networkInterfaces())+ "\n";
+        }
+
+        callback(null, val);
+    });
+};

sample-functions/NodeInfo/oneshot.txt

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-docker build -t nodeinfo . ; docker service rm NodeInfo ; docker service create --network=functions --name NodeInfo nodeinfo