</>PackageGraphPackageGraph

is-docker

npmv4.0.0TypeScript

Check if the process is running inside a Docker container

Safe to adopt

Yes — is-docker scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 359 days ago.

  • ?Adoption: grade ?, Not reported by this registry.

    No download data reported for this package yet.

  • BMaintenance: grade B, Good.

    Last published 359 days ago.

  • AWeight: grade A, Excellent.

    Zero runtime dependencies, about 3.4 KB installed.

  • BSupply chain: grade B, Good.

    This package has a single maintainer (bus factor of 1).

  • ALicense: grade A, Excellent.

    MIT — permissive, with no copyleft found in the dependency tree.

Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.

Install cost

What you actually take on by adding is-docker to a project.

0
Direct dependencies

Runtime packages this one declares itself.

0
Total installed

Distinct packages in the full runtime tree, deduplicated the way a package manager would.

3.4 KB
Install size

Unpacked size of this package plus its entire runtime tree.

—
Tree depth

Longest resolved dependency chain below this package.

Compatibility

Node.js
node >=20
Module format
ESM only
TypeScript
Types included
Install scripts
None

Quick start

A usage example from the is-docker README.

jsFull README ↗
import isDocker from 'is-docker';

if (isDocker()) {
	console.log('Running inside a Docker container');
}

is-docker vs the alternatives

Packages solving a similar problem in the npm ecosystem, compared on the signals that drive an adoption decision.

PackageWeekly downloadsDependentsLicenseLast release
is-dockerthis page02MIT11 months ago
is-inside-container02MIT1 day ago
is-wsl117.6M4MIT1 day ago
is-in-ssh01MIT1 day ago
path-key244.9M1MIT1 day ago
has-flag166.9M1MIT1 day ago

Dependencies

Declared by is-docker v4.0.0. Runtime dependencies are installed with the package; dev dependencies are not.

Dev (2)

esmock ^2.7.3xo ^1.2.2

Used by

Popular packages that depend on is-docker.

is-inside-containernpm

Check if the process is running inside a container (Docker/Podman)

↓ 0/wk◈ 2 dependents⚖ MITTS
gaxiosnpm

A simple common HTTP client specifically for Google APIs and services.

↓ 0/wk◈ 1 dependents⚖ Apache-2.0TS

Relationship graph

Dependencies (left) and dependents (right) of is-docker.

is-inside-contain…gaxiosis-docker
is-docker dependencies dependents

Frequently installed together

undici-typesnpm

A stand-alone types package for Undici

↓ 284M/wk◈ 3 dependents⚖ MITTS
https-proxy-agentnpm

An HTTP(s) proxy `http.Agent` implementation for HTTPS

↓ 225.1M/wk◈ 10 dependents⚖ MIT
node-fetchnpm

A light-weight module that brings Fetch API to node.js

↓ 172.9M/wk◈ 9 dependents⚖ MITTS
expressnpm

Fast, unopinionated, minimalist web framework

↓ 92.8M/wk◈ 17 dependents⚖ MIT
corsnpm

Node.js CORS middleware

↓ 69.7M/wk◈ 6 dependents⚖ MIT
extendnpm

Port of jQuery.extend for node.js and the browser

↓ 68.3M/wk◈ 2 dependents⚖ MIT
webpacknpm

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

↓ 49.8M/wk◈ 29 dependents⚖ MITTS
@types/nodenpm

TypeScript definitions for node

↓ 0/wk◈ 327 dependents⚖ MITTS
@types/corsnpm

TypeScript definitions for cors

↓ 0/wk◈ 4 dependents⚖ MITTS

Release history

1 release in the last two years, typically about 244 days apart.

Recent versions of is-docker
VersionPublishedSizeLicense
4.0.0latest11 months ago3.4 KBMIT
3.0.05 years ago3.1 KBMIT
2.2.15 years ago2.9 KBMIT
2.2.05 years ago3.1 KBMIT
2.1.16 years ago3.1 KBMIT
2.1.06 years ago3.1 KBMIT
2.0.07 years ago2.8 KBMIT
1.1.010 years ago—MIT
1.0.110 years ago—MIT
1.0.011 years ago—MIT

Overview

is-docker is an npm package that check if the process is running inside a Docker container. It has 2 known dependents in the graph. The latest version is 4.0.0, released under the MIT license.

Who should use it

Teams working in the npm ecosystem who need check if the process is running inside a Docker container and value a focused solution.

When not to use it

Consider an alternative if you need to or if a more actively-maintained option better fits your npm stack.

Pros

  • Ships TypeScript type definitions.
  • Clear open-source license (MIT).
  • Lean dependency tree (2 direct dependencies).

Cons

  • No significant drawbacks detected from available metadata.

Auto-generated from collected registry metadata. No external claims are inferred.

Maintainers

sindresorhus

Keywords

containerdetectdockerdockerizedenvenvironmentinsideisprocess

Funding

Frequently asked questions

Should I use is-docker?

Yes — is-docker scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 359 days ago.

How do I install is-docker?

Run `npm install is-docker` to add is-docker to your npm project.

What license is is-docker released under?

is-docker is distributed under the MIT license.

How popular is is-docker?

npm does not publish download counts. Within PackageGraph's crawl, 2 known packages depend on is-docker.

Is is-docker still maintained?

The most recent release of is-docker (v4.0.0) was published 11 months ago.

Does is-docker run install scripts?

No. is-docker does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.