add lai week 5

Phase-1-Practices/Week-5/Dockerfile

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+FROM node:14
+
+WORKDIR /usr/src/app
+
+COPY package*.json ./
+
+RUN npm install
+
+COPY . .
+
+EXPOSE 3000
+
+CMD [ "node", "app.js" ]

Phase-1-Practices/Week-5/Jenkinsfile

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+pipeline {
+agent any
+    stage {
+        stage ('setup') {
+            checkout scm
+        }
+        stage ('Build') {
+            sh 'npm install'
+        }
+        stage ('Test') {
+            sh 'mocha test'
+        }
+    }
+
+}

Phase-1-Practices/Week-5/app.js

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+var express = require('express');
+var app = express();
+
+app.get('/', function (req, res) {
+  res.send('Hello World!');
+});
+
+var server = app.listen(3000, function () {
+  var host = server.address().address;
+  var port = server.address().port;
+
+  console.log('Example app listening at http://%s:%s', host, port);
+});