Dockerignore Node Module - JavaScript

Introduction

The Dockerignore Node module is a tool that allows you to specify files and directories to exclude when building a Docker image. This can help to keep your image size small and limit the number of unnecessary files that are included.

Installation

You can install the Dockerignore Node module using npm:

npm install dockerignore

Usage

To use the Dockerignore Node module, you simply need to create a .dockerignore file in the directory where you are building your Docker image. This file should contain a list of files and directories that you want to exclude from the image.

Here is an example .dockerignore file:

node_modules
dist
*.log

This file will exclude the node_modules and dist directories, as well as any files with a .log extension.

Once you have created your .dockerignore file, you can use the Dockerignore Node module to generate an array of file paths to exclude from your Docker build context.

const dockerignore = require('dockerignore');

const ig = dockerignore();
const paths = ig.add(['**/*']).getIgnores();

The above code will initialize a new Dockerignore object, add the */ pattern to the list of patterns to ignore, and then retrieve the list of file paths to exclude.

Conclusion

The Dockerignore Node module is a simple but powerful tool that can help you to keep your Docker images small and efficient. By creating a .dockerignore file and using the Dockerignore Node module, you can easily exclude unnecessary files and directories from your build context, resulting in faster build times and smaller images.