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Singularity Hub is a registry for Singularity containers. It was developed and still is maintained by Stanford University, and is possibly by way of funding from Google. To read more about it’s background, see the introduction . For policy, including license, data and usage agreement, see here.

How does it work?

Generally, you will follow these basic steps to build containers:

Create an Account

You create an account by authenticating with GitHub. This gives Singularity Hub the ability to create webhooks that will will trigger a new build at each push to the repository. One container collection coincides with one repository, and holds multiple images.

Push to GitHub

Push one or more Singularity build recipes (text files with a specification for your build called Singularity.*) to the repository to trigger the build


Upon receiving notification of your push, Singularity-Hub will launch a build. The container is built in the cloud, and when finished, is programmatically accessible from the Singularity command line client, or the Singularity Global client.

A few important notes for you:

  • By default, we only listen for changes to the master branch. To enable other branches, you need to add them in your Collection settings.
  • Please read about build limits before creating your repositories, along with naming images .

Singularity Hub is developed at Stanford University with support from Google Cloud. Thank you!


If you need help, please don’t hesitate to open an issue.