initial commit node docker image demo

.dockerignore

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+node_modules
+npm-debug.log
+Dockerfile
+.dockerignore
+.git
+README.md
+.gitignore

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+#DynamoDB Local files 
+.dynamodb/ 

Dockerfile

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+FROM node:10
+
+RUN mkdir -p /home/node/app/node_modules
+
+WORKDIR /home/node/app
+
+RUN chown -R node:node .
+
+COPY package*.json ./
+
+RUN npm install
+
+COPY . .
+
+COPY --chown=node:node . .
+
+USER node
+
+EXPOSE 8080
+
+CMD [ "npm", "start" ]

README.md

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+# Minimal Node.js application for Docker image demo tutorial

app.js

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+var express = require("express");
+var app = express();
+var router = express.Router();
+
+var path = __dirname + '/views/';
+
+// Constants
+const PORT = 8080;
+const HOST = '0.0.0.0';
+
+router.use(function (req,res,next) {
+  console.log("/" + req.method);
+  next();
+});
+
+router.get("/",function(req,res){
+  res.sendFile(path + "index.html");
+});
+
+router.get("/sharks",function(req,res){
+  res.sendFile(path + "sharks.html");
+});
+
+app.use(express.static(path));
+app.use("/", router);
+
+app.listen(8080, function () {
+  console.log('Example app listening on port 8080!')
+})