.drone.yml

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+---
+kind: pipeline
+name: node14
+platform:
+  arch: arm64
+
+steps:
+- name: test14
+  image: node:14
+  commands:
+  - npm version
+  - npx --version
+  - npm install --only=dev
+  - npm test
+
+---
+kind: pipeline
+name: node16
+platform:
+  arch: arm64
+
+steps:
+- name: test16
+  image: node:16
+  commands:
+  - npm version
+  - npx --version
+  - npm install --only=dev
+  - npm test

Dockerfile

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+FROM node
+WORKDIR /app
+ADD . /app
+RUN npm install
+EXPOSE 3000
+CMD npm start

Jenkinsfile

@@ -1,12 +1,29 @@
-pipeline {
-    agent { docker { image 'node:14-alpine' } }
-    stages {
-        stage('build') {
-            steps {
-                sh 'npm --version'
-                sh 'npx --version'
-                sh 'node --version'
-            }
+node {
+    def commit_id
+    stage('Preparation') {
+        checkout scm
+        commit_id = sh(returnStdout: true, script: "git log -n 1 --pretty=format:'%h'").trim()
+    }
+    stage('Test NPM') {
+        docker.image('node:8').inside {
+            sh 'npm install --only=dev'
+            sh 'npm test'
         }
     }
+    stage('Test with a DB') {
+        docker.image('mysql:8-oracle').withRun('-e MYSQL_ALLOW_EMPTY_PASSWORD=yes --rm') { mdb ->
+			docker.image('mysql:8-oracle').inside("--link ${mdb.id}:db") {
+				/* Wait until mysql service is up */
+				sh 'while ! mysqladmin ping -hdb --silent; do sleep 1; done'
+			}
+			docker.image('node:8').inside("--link ${mdb.id}:mysql") {
+				/*
+				 * Run some tests which require MySQL, and assume that it is
+				 * available on the host name `db`
+				 */
+                sh 'npm install --only=dev'
+                sh 'npm test'
+			}
+		}
+    }
 }

index-db.js

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+var express = require('express');
+var app = express();
+var mysql = require("mysql");
+var con = mysql.createConnection({ host: process.env.MYSQL_HOST, user: process.env.MYSQL_USER, password: process.env.MYSQL_PASSWORD, database: process.env.MYSQL_DATABASE});
+
+// mysql code
+
+con.connect(function(err){
+  if(err){
+    console.log('Error connecting to db: ', err);
+    return;
+  }
+  console.log('Connection to db established');
+  con.query('CREATE TABLE IF NOT EXISTS visits (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, ts BIGINT)',function(err) {
+    if(err) throw err;
+  });
+});
+
+// Request handling
+app.get('/', function (req, res) {
+  // create table if not exist
+  con.query('INSERT INTO visits (ts) values (?)', Date.now(),function(err, dbRes) {
+    if(err) throw err;
+    res.send('Hello World! You are visitor number '+dbRes.insertId);
+  });
+});
+
+
+// server
+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);
+});

index.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);
+});

package.json

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+{
+  "name": "myapp",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "start": "node index.js",
+    "test": "npm install inherits && mocha"
+  },
+  "engines": {
+    "node": "^4.6.1"
+  },
+  "dependencies": {
+    "express": "^4.14.0",
+    "http-errors": "^1.7.0",
+    "mysql": "^2.10.2"
+  },
+  "devDependencies": {
+    "inherits": "^2.0.3",
+    "mocha": "^5.2.0",
+    "ms": "^2.1.1"
+  }
+}

test/test.js

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+var assert = require('assert');
+describe('Array', function() {
+  describe('#indexOf()', function() {
+    it('should return -1 when the value is not present', function() {
+      assert.equal(-1, [1,2,3].indexOf(4));
+    });
+  });
+});