> ## Documentation Index
> Fetch the complete documentation index at: https://developer.onecodex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Docker Images

When creating your "shell" (non-Nextflow) workflow, we will provide a default Docker image URI, which uses Ubuntu. If you wish to use an alternative Docker image, you may provide the URI for the image.

<Warning>
  Docker image URIs must be publicly accessible. If you require a private image, reach out to our team.
</Warning>

<Note>
  For Nextflow workflows, instead of an image, you can choose from our pre-installed Nextflow versions.
</Note>