Customizations are blueprint entries that aren't package-related.

Customizations are other image specifications that aren't related to the installation of packages. These include predefined users and groups, SSH keys that implement system security, and other requirements.

Customizations in blueprints are denoted depending on their scope. A customization that has a general application, such as specifying a host name for the image, is defined in a [customizations] block entry. More specific customizations append tags to the heading to better identify the customization. For example, user definitions are in a [[customizations.user]] block, while serviced customizations are under the [[customizations.services]] heading, and so on.

Similar to package listings, customization parameters also follow the parameter = value format.

For more information about specifying customizations in a blueprint, see Blueprint Format.