Docker Extension Account Info, Categories, and Marketplace Preview

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| `com.docker.extension.account-info`         | No       | Whether the user needs to register to a SaaS platform to use some features of the extension.                                                                                                                                                                                                                                                                                                                                                                                                          | `required` in case it does, leave it empty otherwise.                                                                                                                                                                                                           |
| `com.docker.extension.categories`           | No       | The list of Marketplace categories that your extension belongs to: `ci-cd`, `container-orchestration`, `cloud-deployment`, `cloud-development`, `database`, `kubernetes`, `networking`, `image-registry`, `security`, `testing-tools`, `utility-tools`,`volumes`. If you don't specify this label, users won't be able to find your extension in the Extensions Marketplace when filtering by a category. Extensions published to the Marketplace before the 22nd of September 2022 have been auto-categorized by Docker. | Specified as comma separated values in case of having multiple categories e.g: `kubernetes,security` or a single value e.g. `kubernetes`.                                                                                                   |

> [!TIP]
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> Docker Desktop applies CSS styles to the provided HTML content. You can make sure that it renders correctly 
> [within the Marketplace](#preview-the-extension-in-the-marketplace). It is recommended that you follow the 
> [styling guidelines](../design/_index.md).

## Preview the extension in the Marketplace

You can validate that the image labels render as you expect.

When you create and install your unpublished extension, you can preview the extension in the Marketplace's **Managed** tab. You can see how the extension labels render in the list and in the details page of the extension.

> Preview extensions already listed in Marketplace
>
> When you install a local image of an extension already published in the Marketplace, for example with the tag `latest`, your local image is not detected as "unpublished".

Title: Docker Extension Account Info, Categories, and Marketplace Preview

Summary

This section covers the `com.docker.extension.account-info` and `com.docker.extension.categories` image labels. It also provides instructions on how to preview an extension in the Docker Marketplace before publishing, allowing developers to validate how image labels render in the listing and details page. It notes that installing a local image of a Marketplace extension won't mark it as 'unpublished'.