---
title: shifter
description: Reference for the shifter config scope, which controls how Shifter containers are executed by Nextflow.
---

# `shifter`

The `shifter` scope controls how [Shifter](https://docs.nersc.gov/programming/shifter/overview/) containers are executed by Nextflow.

##### `shifter.enabled`

Execute tasks with Shifter containers (default: `false`).

##### `shifter.envWhitelist`

Comma-separated list of environment variable names to be included in the container environment.
