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cloudfoundry/cnb

Sponsored OSS

By Linux Foundation

•Updated almost 3 years ago

CNB Builders - A builder, used to translate code into OCI images.

Image
5

50M+

cloudfoundry/cnb repository overview

⁠Quick Reference

  • Buildpacks.io⁠ → Cloud Native Buildpack website
  • Pack – Buildpack CLI⁠ → CLI used to consume the builder, along with source code, and construct an OCI image
  • CNB Tutorial⁠ → Tutorial to get you started using pack, this builder, and your application to create a working OCI image
  • Buildpack & Platform Specification⁠ → Detailed definition of the interaction between a platform, a lifecycle, Cloud Native Buildpacks, and an application
  • Get help from the Cloud Foundry Slack⁠, and if you have any specific issues with a CNB, file an issue in the appropriate github repo.

⁠What are Cloud Native Buildpacks (CNBs)?

⁠CNBs are modular components used to turn your app source code into a runnable OCI image.

Buildpacks, in general, provide a higher-level abstraction for building apps compared to Dockerfiles. Cloud Native Buildpacks, a project initiated by Pivotal and Heroku, is a member of the Cloud Native Sandbox⁠. The project unifies the buildpack ecosystem, through a platform-to-buildpack contract that embraces modern container standards, specifically the OCI image format.

⁠What are these images (cloudfoundry/cnb)?

These images, called builders, contain internal operating system images (see the below sections for differences), the lifecycle executables for your application, and a collection of Cloud Native Buildpacks, all structured according to the CNB specification⁠. These are created by⁠, and consumed by⁠, the pack CLI⁠.

The different tags refer to differences in the underlying file-system, which supports different operating systems:

  • base⁠ → A minimal image based on Ubuntu 18.04 (Bionic Beaver), with the addition of a few packages (called mixins⁠) - notably, git and build-essentials (added in order to successfully run go applications).
  • full⁠ → An image based on Ubuntu 18.04 (Bionic Beaver) supplemented with additional packages⁠.
  • tiny⁠ → A minimal build image (same as base), with a tiny, distroless-like run image based on Ubuntu 18.04 (Bionic Beaver).

Note: At the moment, cflinuxfs3 is the only option when running python, php, httpd or nginx apps.

⁠Supported Languages Ecosystems

Each language ecosystem is a combination of the language specific CNBs in conjunction with some combination of build system tooling.

⁠Java⁠
⁠NodeJS
⁠Python
⁠Go
⁠PHP
⁠HTTPD
⁠Nginx

Tag summary

Content type

Image

Digest

sha256:17ea21162…

Size

510.3 MB

Last updated

almost 3 years ago

docker pull cloudfoundry/cnb:base-platform-api-0.3

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