> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/security-testing-orchestration/use-sto/sto-scanner-configuration/shared/step-palette/image/domain.md).

# Domain

The URL of the registry that contains the image to scan. Examples include:

* `docker.io`
* `app.harness.io/registry`
* `us-east1-docker.pkg.dev`