A Simple NodeJS Application Inside a Docker Container

docker_nodejs cd docker_nodejs

code .

install git

git init

list the local branches

git branch --list

rename the name of master branch to main

git branch -m master main

make .gitignore file

touch .gitignore

npm init

add node_modules to .gitignore file

touch .gitignore

and add this node_modules to file

npm install express

write a Hello World! sample nodejs code

touch index.js

and add simple code in it

run the express server on port 3000

node index.js

test on browser localhost:3000

add .dockerignore file to project and add .git and node_modules folders inside it

touch .dockerignore

make the 1st docker image from current Dockerfile

docker build . docker images

Run the docker images that will run the express server app

docker run 3bded4511375

localhost:3000 not run because we have to expose a port for host machine so stop the container

docker stop e2086f3353b6 docker run -p 8000:3000 3bded4511375

now run it in browser: localhost:8000 and cooool