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Reference implementation for the Buildpack API v3 lifecycle component

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Lifecycle

Build Status GoDoc

A reference implementation of the Cloud Native Buildpacks specification.

This lifecycle implements the following versioned APIs

  • Buildpack API 0.2
  • Platform API 0.3

Commands

Build

  • detector - chooses buildpacks (via /bin/detect)
  • analyzer - restores launch layer metadata from the previous build
  • restorer - restores cache
  • builder - executes buildpacks (via /bin/build)
  • exporter - creates image and stores cache

Run

  • launcher - invokes choice of process

Rebase

  • rebaser - remotely patches images with new base image

Development

To test, build, and package binaries into an archive, simply run:

$ make all

This will create an archive at out/lifecycle-<LIFECYCLE_VERSION>+linux.x86-64.tgz.

By default, LIFECYCLE_VERSION is 0.0.0. It can be changed by prepending LIFECYCLE_VERSION=<some version> to the make command. For example:

$ LIFECYCLE_VERSION=1.2.3 make all

Steps can also be run individually as shown below.

Test

Formats, vets, and tests the code.

$ make test

Build

Builds binaries to out/linux/lifecycle/.

$ make build

To clean the out/ directory, run make clean.

Package

Creates an archive at out/lifecycle-<LIFECYCLE_VERSION>+linux.x86-64.tgz, using the contents of the out/linux/lifecycle/ directory, for the given (or default) LIFECYCLE_VERSION.

$ make package

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Reference implementation for the Buildpack API v3 lifecycle component

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