Spike Story

Investigate what impediments we have, if any, to implement a Shipwright build strategy that implements the Cloud Native Buildpacks Platform v0.12 spec.

Background

CNB publishes a "platform" specification detailing how buildpack images should be built. They prescribe a series of steps and executables to invoke, which ultimately create a container image. These need to be invoked in a Shipwright build through a build strategy.

Spike Goals

• Identify the gaps between the CNB 0.12 Platform spec, and the implementation we have in Shipwright upstream (see samples)
• Collaborate with the buildpacks team to draft and "ideal" build strategy for Platform v0.12 (OK if it fails to run)
• Identify potential feature gaps (if any) which should be brought to the Shipwright community to address.

Additional Info

• CNB Platform Spec v0.12: github
• Presentation on Platform spec: slides
• Presentation on Paketo UBI: slides