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ReadMe.md

Build a Node.js Application with Docker

Docs

  • Check the versions
$ npm --version
7.5.0

$ node --version
v15.8.0
  • Create required dirs
$ mkdir node_project
$ cd node_project
  • Install the dependencies
$ npm install                        

added 50 packages, and audited 51 packages in 4s

found 0 vulnerabilities
  • Run the app using
$ node app.js
Example app listening on port 8080!
/GET
/GET
/GET
/GET
^C
  • Create Docker file
touch Dockerfile
touch .dockerignore
  • Build the dockerfile
$ docker build -t codeaprendiz/nodejs-image-demo .
$ docker build -t codeaprendiz/nodejs-image-demo .
Sending build context to Docker daemon  46.59kB
Step 1/9 : FROM node:10-alpine
 ---> 3ac6f53a4041
Step 2/9 : RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
 ---> Running in a5d9c5f2163e
Removing intermediate container a5d9c5f2163e
 ---> 619cfbdb3074
Step 3/9 : WORKDIR /home/node/app
 ---> Running in de1346ff4728
Removing intermediate container de1346ff4728
 ---> 8844ddc9732d
Step 4/9 : COPY package*.json ./
 ---> 23eec42f9175
Step 5/9 : USER node
 ---> Running in f2ec865dc42f
Removing intermediate container f2ec865dc42f
 ---> 2c83bf0aca18
Step 6/9 : RUN npm install
 ---> Running in 93a7b6e8cf88
npm WARN read-shrinkwrap This version of npm is compatible with lockfileVersion@1, but package-lock.json was generated for lockfileVersion@2. I'll try to do my best with it!
npm WARN [email protected] No repository field.

added 50 packages from 37 contributors and audited 50 packages in 2.046s
found 0 vulnerabilities

Removing intermediate container 93a7b6e8cf88
 ---> 81316b37fd6a
Step 7/9 : COPY --chown=node:node . .
 ---> a44fcf015b61
Step 8/9 : EXPOSE 8080
 ---> Running in 03e07b6e3971
Removing intermediate container 03e07b6e3971
 ---> ee7122769051
Step 9/9 : CMD [ "node", "app.js" ]
 ---> Running in fdea219aeebc
Removing intermediate container fdea219aeebc
 ---> f681017dfcdf
Successfully built f681017dfcdf
Successfully tagged codeaprendiz/nodejs-image-demo:latest
  • check the image built
$ docker images | grep codeaprendiz
codeaprendiz/nodejs-image-demo                  latest                                                  f681017dfcdf   2 minutes ago   85.9MB
  • create a container with the image
$ docker run --name nodejs-image-demo -p 8080:8080 -d codeaprendiz/nodejs-image-demo
a28285829e5d0c7f9d838af40ba06575ef3950846e7426b4ca2536157864e927

$ docker ps | grep nodejs-image
a28285829e5d   codeaprendiz/nodejs-image-demo   "docker-entrypoint.s…"   31 seconds ago   Up 30 seconds   0.0.0.0:80->8080/tcp   nodejs-image-demo
  • Check if the application is up
$ curl --write-out '%{http_code}' --silent --output /dev/null http://localhost:80                                                                                              
200
  • Login to you dockerhub
$ docker login -u codeaprendiz                                                    
Password: 
Login Succeeded
  • Push the image to dockerhub
$ docker push codeaprendiz/nodejs-image-demo

  • Images

    • Home page

    • Info page