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In the Getting Started tutorial, you used the pack CLI and the base builder to create a runnable image with your application. This section explains what builders are and what builders are released by the Paketo project.

What is a builder?

A builder is an image that contains three components:

  • a set of buildpacks, which provide your app’s dependencies
  • a stack, which provides the OS layer for your app image
  • the CNB lifecycle, which puts everything together to produce your final app image

For more information about builders, see

What Paketo builders are available?

The Paketo project releases several builder images to choose from depending on your application needs. See the Builders reference documentation for a complete list of available Paketo builders.


Last modified: April 3, 2024