docker rest api hapijs nodejs vscode realtime development

1. The javascript echo parameter server hapi 

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ cat server/index.js 
const Hapi = require('hapi');
class EchoServerHapi{
    constructor(args){
        this.server = Hapi.server(args);
    }
    async init(){
        try {
          await this.routing();
          await this.server.start();
          console.log(`Here we have the echo Server Hapi running:: ${this.server.info.uri}`);
        } catch (error) {
          console.log('Error while trying to run echo Server Hapi:: ' + error.message);
        }
    }
    async routing(){
        this.server.route({
            method: 'GET',
            path: '/',
            handler: (request, h) => {
                return 'Hello, Javascript Developer! ! !\n';
            }
        });        
        this.server.route({
            method: 'GET',
            path: '/{name}',
            handler: (request, h) => {
                return 'Hello, ' + encodeURIComponent(request.params.name) + '!\n';
            }
        });
        this.server.route({
            method: 'POST',
            path: '/msg',
            handler: (request, h) => {
                return "POSTing:: "+JSON.stringify(request.payload) + '\n';
            }
        });
        this.server.route({
            method: 'PUT',
            path: '/msg',
            handler: (request, h) => {
                return "PUTing:: "+JSON.stringify(request.payload) + '\n';
            }
        });
        this.server.route({
            method: 'DELETE',
            path: '/{name}',
            handler: (request, h) => {
                return 'Bye, ' + encodeURIComponent(request.params.name) + '!\n';
            }
        });
    }
}
/* LOOK THIS COMMENT, NO localhost, just 0.0.0.0 */
/*const firstEchoServer = new EchoServerHapi({
    port: 3001,
    host: 'localhost',
    app: {}
  });*/
  const firstEchoServer = new EchoServerHapi({
    port: 3001,
    host: '0.0.0.0',
    app: {}
  });
firstEchoServer.init();

2. The node package.json done with npm

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ cat package.json 
{
  "name": "rest_echo_hapi",
  "version": "1.0.0",
  "description": "This README would normally document whatever steps are necessary to get your application up and running.",
  "main": "server/index.js",
  "scripts": {
    "start": "node server/index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "maximilianou@gmail.com",
  "license": "MIT",
  "dependencies": {
    "hapi": "^17.8.1",
    "isemail": "^3.2.0"
  }
}

3. The Dockerfile to run and modify the javascript program

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ cat Dockerfile 
FROM node
WORKDIR /code
RUN npm set prefix /usr/local && npm install -g nodemon
COPY package.json /code/package.json
RUN npm set prefix /usr/local && npm install && npm ls
RUN mv /code/node_modules /node_modules
COPY . /code
#EXPOSE 3000  # expose but no publish, except useing docker -P
CMD ["npm", "start"]

4. The docker compose to run the composition of service docker having volume shared path

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ cat docker-compose.yml 
version: "2"
services:
  web:
    build: .
    command: nodemon -L --inspect=0.0.0.0:5858
    volumes:
      - .:/code
    ports:
      - "3001:3001"
      - "5858:5858"

5. Starting from command line with npm, from package.json

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ npm start
> rest_echo_hapi@1.0.0 start /home/educacion/src/resthapi/v2/rest_echo_hapi
> node server/index.js
Here we have the echo Server Hapi running:: http://0.0.0.0:3001

6. Starting from docker compose

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ docker-compose up
Starting restechohapi_web_1
Attaching to restechohapi_web_1
web_1  | [nodemon] 1.18.7
web_1  | [nodemon] to restart at any time, enter `rs`
web_1  | [nodemon] watching: *.*
web_1  | [nodemon] starting `node --inspect=0.0.0.0:5858 server/index.js`
web_1  | Debugger listening on ws://0.0.0.0:5858/e6293311-3e2c-4f77-af38-d087a52d30c3
web_1  | For help, see: https://nodejs.org/en/docs/inspector
web_1  | Here we have the echo Server Hapi running:: http://0.0.0.0:3001

7. Checking GET, POST, PUT and DELETE echoing the parameter in each case.

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl http://0.0.0.0:3001
Hello, Javascript Developer! ! !
educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl http://127.0.0.1:3001
Hello, Javascript Developer! ! !
educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl http://localhost:3001
Hello, Javascript Developer! ! !

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl http://localhost:3001/Hijitus
Hello, Hijitus!

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl --request DELETE http://localhost:3001/Larguirucho
Bye, Larguirucho!

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl --header "Content-Type: application/json" --request POST --data '{"name":"Pucho"}' http://localhost:3001/msg
POSTing:: {"name":"Pucho"}

educacion@educacion:~/src/resthapi/v2/rest_echo_hapi$ curl --header "Content-Type: application/json" --request PUT --data '{"name":"Profesor Neurus"}' http://localhost:3001/msg
PUTing:: {"name":"Profesor Neurus"}