Add NodeBase function concept

sample-functions/NodeBaseFunction/Dockerfile

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+FROM node:6.9.1-alpine
+
+ADD https://github.com/alexellis/faas/releases/download/0.5.1-alpha/fwatchdog /usr/bin
+RUN chmod +x /usr/bin/fwatchdog
+
+WORKDIR /root/
+
+COPY package.json .
+
+# Provides a boot-strap into your function, just add handler.js to derived image
+RUN npm i
+COPY faas_index.js .
+
+ENV fprocess="node faas_index.js"
+
+HEALTHCHECK --interval=5s CMD [ -e /tmp/.lock ] || exit 1
+
+CMD ["fwatchdog"]

sample-functions/NodeBaseFunction/build.sh

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+#!/bin/sh
+
+echo "Building functions/nodebase:alpine-6.9.1"
+docker build -t functions/nodebase:alpine-6.9.1 .
+

sample-functions/NodeBaseFunction/faas_index.js

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+"use strict"
+
+let getStdin = require('get-stdin');
+
+let handler = require('./handler');
+
+getStdin().then(val => {
+
+  let req;
+  if(process.env.json) {
+   req = JSON.parse(val);
+  } else {
+    req = val
+  }
+
+  handler(req, (err, res) => {
+    if(err) {
+      return console.error(err);
+    }
+
+    if(process.env.json) {
+      console.log(JSON.stringify(res));
+    } else {
+      console.log(res);
+    }
+  });
+}).catch(e => {
+  console.error(e.stack);
+});

sample-functions/NodeBaseFunction/package.json

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+{
+  "name": "NodejsBase",
+  "version": "1.0.0",
+  "description": "",
+  "main": "faas_index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "get-stdin": "^5.0.1"
+  }
+}

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