This specification defines the artifact format, delivery mechanism, and order resolution process for buildpacks.

Buildpack Descriptor

A buildpack must contain a buildpack.toml file in its root directory.

Buildpackage

A buildpackage is a distributable artifact that contains a buildpack. Its format may be either:

• An OCI image
• An uncompressed tar archive with the extension .cnb containing an OCI image.

Further Reading

You can read the complete Distribution specification on Github.

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