Npm2docker NPM

npm2docker

npm2docker is a tool for developers to build a Docker image of a javascript program and register it in a registry such as dockerhub.

Prerequisites

The program must be registered in the npm registry and can be installed with the yarn command.
pacakge.json must have a bin attribute that can be executed as a command.

Features

No Dockerfile is required
Identify the image name and revision tag from the npm repository registration, and assign them automatically
Supports npm login

How to use

Installation

Install it in your package with the following command

yarn add --dev npm2docker

Example release scripts

Add the following to scripts in packge.json.

"register-image": "npx npm2docker package-name --latest --push --remove",

If you want to use it against packge that is registered in the npm private repository You will need to run npm login beforehand. Then, specify the URL of the repository in the npm_config_registry environment variable as follows.

"register-image": "npm_config_registry=https://registry.npmjs.org npx npm2docker package-name --latest --push --remove",

If you want to release it, use the following command.

yarn register-image

This script will do the following:

Build an image tagged as package-name:last-release-revision
Push the image to dockerhub
Push same image to dockerhub with latest tag
Delete the image.

Now, If the package name is prefixed with the scope name, the image name will be the one without the scope name. The last revision is the one shown by the "docker view package_name version" command. The CMD of the image will have the key value of the first of the key-values displayed by the "docker view package bin" command.

Add to private repository.

You can specify the destination of the push with --prefix.

To register to a repository in an Organization on dockerhub.

You can use --prefix to add the organization name with suffix "/". For example, to register to "exorg" organization, specify "--prefix exorg/".

To register to a unique registry, use --prefix

To register to a own registry, specify --prefix FQDN:port-number followed by /. For example, if you want to register to reg.example.com:5000, specify "--prefix reg.example.com:5000/".