Image Builder uses the following terms and concepts:

• Blueprint

  The blueprint functionality provided in Cockpit enables you to define a set of specifications for building a ready-to-use image. These specifications enable you to optionally: 1) select packages to add to an image, and 2) define custom settings, as required, for image properties such as users, groups, firewall ports, services, file systems, ssh keys, and so on.

  Defining a blueprint specification is the first step in the process for composing an image. You can define a blueprint in Cockpit by using the options: Create blueprint or Edit blueprint. You can add a blueprint to the Cockpit host by using the option: Import blueprint. Finally, you can delete a blueprint by using the option: Delete blueprint. For more information about creating and managing blueprints, see Create and Manage Blueprints.

• Ready-to-Use Images
  Ready-to-Use images are images that are generated by the cockpit-composer application plugin. They're the final product in image building. All generated images are typically composed using the default source Image Builder repositories and the blueprint .

  Note:

  All generated blueprint images are composed from the specifications defined in the blueprint and the source Image Builder repositories.
• Customizations

  Customizations are optional settings that let you decide what goes into an image. All customization settings appear under the section Customizations in the Create blueprint dialog and the Edit Blueprint dialog. For more information about defining customization blueprint properties, see this topic

• Image Builder Source Repositories

  The source repositories are the default repositories that Image Builder uses to compose an image. You can view the source respositories used to compose the image by navigating to the Source section of the Blueprint page. Optionally, you can override the default source by defining repositories other source repositories. For more information about viewing or adding a source repository, see View and Manage Image Builder Repositories.

• Image Log File

  For each image created in Cockpit, a log file is generated and available for download on the Images section of the Blueprint page. This log file captures events associated with the Image Builder composer service. For more information about downloading the log file, see Download an Image Log File.