Docker Utility Containers & Executing Commands - (Section 5)

This docker utility container will help us execute npm commands without installing node in our machine. I've used node 20.10-alpine version in this project.

How to run node in interactive mode as shell in our machine

docker run -it --rm --name node-util node:20.10-alpine

How to run node in interactive mode without any Dockerfile in terminal to use npm commands

docker run -it -d --rm --name node-util node:20.10-alpine

• Executing npm command (say npm init)

docker exec -it node-util npm init

The docker exec command helps us to execute(run) a new command inside the running container.

Set-up using Dockerfile

1. Build the image

docker build . -t actionanand/node-util

2. You can run any command begining with npm (leave npm and add remaining at the end of following command)

docker run -it --rm --name node-util -v "D:\AR_extra\rnd\docker\node-util:/app" actionanand/node-util

For wsl2, mac and linux

docker run -it --rm --name node-util -v $(pwd):/app actionanand/node-util

To run npm init command

docker run -it --rm --name node-util -v $(pwd):/app actionanand/node-util init

To run npm install express

docker run -it --rm --name node-util -v $(pwd):/app actionanand/node-util install express

Set-up using docker-compose

• docker-compose run is used to run single service from multiple services present indide docker-compose.yaml

Usage

docker-compose run --rm <service_name>

Consider npm-util is the registered service name in docker-compose.yaml and If you want to execute npm init, the following will be the command to be executed!

docker-compose run --rm npm-util init

So if npm is the registered service name,

docker-compose run --rm npm init

Docker Image's public URL

• actionanand/node-util

  

Associated repos:

1. Docker Basics
2. Managing Data and working with volumes
3. Docker Communication
4. Docker Multi-container with docker-compose
5. Docker Utility Containers & Executing Commands
6. Laravel with Docker
7. Angular with Docker