Creating a REST API using Node.JS, MongoDB and Docker

Building from Scratch

Create a directory

 mkdir node-mongo-docker

Initialize

 cd node-mongo-docker
 npm init -y

 Wrote to /../../node-mongo-docker/package.json:

{
  "name": "mongo-docker",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/dockersamples/node-mongo-docker.git"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/dockersamples/node-mongo-docker/issues"
  },
  "homepage": "https://github.com/dockersamples/node-mongo-docker#readme"
}

 npm install ronin-server ronin-mocks

added 117 packages, and audited 118 packages in 6s

7 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

Creating server.js

Now, let’s add some code to handle our REST requests. We’ll use a mock server so we can focus on Dockerizing the application.

Open this working directory in your IDE and add the following code into the server.js file.

const ronin = require('ronin-server')
const mocks = require('ronin-mocks')

const server = ronin.server()

server.use('/', mocks.server(server.Router(), false, true))
server.start()

Testing the application

Let’s start our application and make sure it’s running properly. Open your terminal and navigate to your working directory you created.

 node server.js

Let's open the new terminal and test it

curl --request POST \
  --url http://localhost:8000/test \
  --header 'content-type: application/json' \
  --data '{"msg": "testing" }'

Results:

{"code":"success","payload":[{"msg":"testing","id":"fdf077e5-9606-471d-a5ab-e6ec11e7f3e4","createDate":"2022-09-07T09:38:49.818Z"}]}%

Bring up the containers

 docker compose up -d