kpack

Spec sheet

Purpose

kpack is a Kubernetes native container build service that builds OCI images using Cloud Native Buildpacks.Read 4 Oct 2026 · github.com

Integrations

The documentation includes examples for Docker Hub, Google Container Registry, and GitHub credentials.Read 4 Oct 2026 · github.com

Support

The project README points users to a weekly working group and the CNCF Slack community.Read 4 Oct 2026 · github.com

License

The repository identifies its license as Apache-2.0.Read 4 Oct 2026 · github.com

Automatic rebuilds

Image resources schedule rebuilds when source code or builder buildpacks or stacks change.Read 4 Oct 2026 · github.com

Builder configuration

A declarative builder resource configures the buildpack order and operating system stack used for builds.Read 4 Oct 2026 · github.com

Caching

Image resources support volume-based or registry-based build caching.Read 4 Oct 2026 · github.com

Credentials

Kubernetes secrets can provide credentials for publishing images to Docker registries and accessing private Git repositories.Read 4 Oct 2026 · github.com

Image registry

Built OCI images are published to a configured image tag, and additional tags must use the same registry because cross-registry exporting is unsupported.Read 4 Oct 2026 · github.com

Installation requirements

Installation requires Kubernetes 1.22 or later, kubectl, cluster-admin permissions, and an accessible Docker V2 registry.Read 4 Oct 2026 · github.com

One-off builds

A build resource can execute a single Cloud Native Buildpacks OCI image build.Read 4 Oct 2026 · github.com

Security behavior

SSH host key checking for Git credentials is disabled by default and can be enabled through a controller environment variable.Read 4 Oct 2026 · github.com

Service bindings

Legacy Cloud Native Buildpacks service bindings are deprecated in kpack.io/v1alpha2 and are expected to be removed; the docs direct users to Kubernetes Service Binding configuration.Read 4 Oct 2026 · github.com

Plans and prices

Every kpack plan and price →

Where Specifiction places it

• Container Build Tools#23 of 347.4