What is a builder?

A builder is an image that contains all the components nescessary to execute a build. A builder image is created by taking a build image and adding a lifecycle, buildpacks, and files that configure aspects of the build including the buildpack detection order and the location(s) of the run image

Anatomy of a builder

A builder consists of the following components:

• Buildpacks
• Lifecycle
• Stack’s build image

Resources

To learn how to create your own builder, see our Operator’s Guide.

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