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    containerized

A microlibrary to detect whether Node.js runs inside a Docker container or not


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201
decreased by-19.28%
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1
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Containerized

  • Detect whether your Node.js process runs inside a Docker container or not
  • Detection is based on existence of Docker-specific cgroups
  • Well tested (aiming at 100% line, function, statement and branch coverage)
  • Works with all Node.js versions >= 0.10.x.
  • Tested in 0.10.x, 4.x, 5.x, 6.x.

Usage

npm install containerized

Node.js versions 0.12, 4.x, 5.x, 6.x, ...

var containerized = require('containerized');

if (containerized()) {
	console.log('I am running inside a Docker container.');
} else {
	console.log('I am NOT running inside a Docker container.');
}

In Node.js 0.10.x

Up until node 0.10.x, containerized offers only async way of fetching whether the process is containerized in a container or not.

var containerized = require('containerized');

containerized(function(err, result) {
	if (result === true) {
		console.log('I am running inside a Docker container.');
	} else {
		console.log('I am NOT running inside a Docker container.');
	}
});

For synchronous interface in Node <= 0.10, wrap it in deasync module:

var deasync = require('deasync');
var containerized = deasync(require('containerized'));

// then you can:
if (containerized()) {
	console.log('I am running inside a Docker container.');
}

Licence

MIT.

Contribute?

You're welcome! Make sure you keep an eye on the tests.

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Last updated on 26 May 2016

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