# is-docker > Check if the process is running inside a Docker container ## Install ```sh npm install is-docker ``` ## Usage ```js import isDocker from 'is-docker'; if (isDocker()) { console.log('Running inside a Docker container'); } ``` ## CLI ```sh $ is-docker ``` Exits with code 0 if inside a Docker container and 2 if not. ```sh $ is-docker && echo "Running in Docker" || echo "Not running in Docker" ``` ## Related - [is-inside-container](https://github.com/sindresorhus/is-inside-container) - Check if the process is running inside a container