Docker 2 - Doker with Node and Mongo

By Sheldon L

Published at 2020-03-01

Updated at 2020-03-01

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• Vedio

• My excersice

Start a Node.js Project app

npm init

npm install body-parser    # parse whatever comes in from our form
npm install ejs            # template engine
npm install express        # frame work
npm install mongoose       # talk to mango

• Modify package.json:

"scripts": {
    "start": "node index.js"
}

• Make models:

mkdir models
touch models/Items.js
vim models/Items.js    # models/Items.js

• New index.js

• Make views:

mkdir views
touch views/index.ejs
vim views/index.ejs   # views/index.ejs

• Test and Debug in localhost:

sudo docker container run -d -p 27017:27017 --name my_mongo mongo

node index.js

# localhost:3000

Dockerfile and

• New Dockerfile

FROM node:11              # node version 11

WORKDIR /usr/scr/app      # working directory in the container

COPY package*.json ./     # copy package.js and package-lock.js to working directory

RUN npm install           # npm install

COPY . .                  # copy other files, edit the .dockerignore prevent node_modules push to your docker hub

EXPOSE 3000               # container port exposed to local machine

CMD ["npm", "start"]      # package.js: {scripts: {start: "..."}}

docker-compose

• New docker-compose.yml

version: '3'                                      # version of `docker-compose`
services:
  app:                                          # app container
    container_name: docker-node-mongo
    restart: always                           # restart whenever it fails
    build: .                                  # will use the `Dockerfile` in the same dir to build container
    ports:
      - '80:3000'                           # local machine to app container
    links:
      - mongo                               # app container to mongo container
  mongo:
    container_name: mongo
    image: mongo
    ports: '27017:27017'                      # local machine to mango container

• New .dockerignore

• Modify localhost to mongo container in index.js, and remove the test mongo container.

• Try docker-compose in local machine:

# remove `node_modules`

# install docker-compose at the first time https://docs.docker.com/compose/install/
docker-compose --version

# ./
sudo docker-compose up
# Ctl + C to exit
# if want it run background
sudo docker-compose up -d

# check in localhost:80

# to remove containers and network
sudo docker-compose down

Deployment

• Push this dir to github

• Deploy to Server:

  • Open a VPS
  • Install docker
  • Install docker-composer
  • pull repo
  • run docker-compose up
  • checke http://domain.name