kraken-base-image

The kraken-base-image provides a Docker image for AMD64 and ARM64 platforms that comes pre-bundled with a lot of different common programming language runtimes and toolchains, intended to be used as a runtime image for continuous integration pipelines. The image is currently base on ubuntu:20.04.

$ docker pull ghcr.io/kraken-build/kraken-base-image:develop

Versioning

Aside from the develop tag, exact image versions can be pinned based on git tag --describe. The Kraken base image is built from various Ubuntu starting images. We use semantic versioning in the form of x.y.z and x.y tags.

Starting Image	Kraken base image tags	Notes
ubuntu:22.04	develop-ubuntu_22.04, x.y.z-ubuntu_22.04, x.y-ubuntu_22.04
ubuntu:24.04	develop, x.y.z, x.y, develop-ubuntu_24.04, x.y.z-ubuntu_24.04, x.y-ubuntu_24.04

Versioning rules

New versions of the base image must adhere to the Semantic Versioning scheme. Any upgraded software that is no longer backwards compatible must be released as a minor version upgrade (we use major version 0). This is to prevent (non backwards-compatible) software upgrades from blocking the release of backwards compatible upgrades or hotfixes.

Only when absolutely necessary, we introduce a branch for hot fixing older versions, such as 0.17.x to release versions of the base image in that minor version range besides a higher minor having already been released.

Image contents

General tools

Software	Installed via	Version
ansible	uv	14.3.1
build-essential	apt-get	latest
BuildKit	GitHub Releases	0.32.2
clang	apt-get	latest
cloud-utils	apt-get	latest
cURL	apt-get	latest
Git	apt-get	latest
Git LFS	apt-get	latest
GraphViz	apt-get	latest
jq	apt-get	latest
kraken-wrapper	uv	0.52.1
libffi	apt-get	latest
libssl	apt-get	latest
openssh-client	apt-get	latest
pkg-config	apt-get	latest
QEMU (kvm, x86_64, aarch64)	apt-get	latest
sccache	GitHub releases (formula)	0.17.0
sqlx-cli	cargo	0.9.0
UPX	apt-get	latest
wget	apt-get	latest
yq	GitHub releases	4.53.6

Language runtimes and tools

Software	Installed via	Version
buf	GitHub releases	1.72.0
buffrs	cargo	0.13.3
cargo-deny	cargo	0.20.2
cargo-hack	cargo	0.6.45
cargo-llvm-cov	cargo	0.9.0
cargo-semver-checks	cargo	0.50.0
cmake	apt-get	latest
gcc, g++	apt-get	latest
grcov	GitHub releases (formula)	0.10.7
lcov	apt-get	latest
llvm	apt-get	latest
Nix	https://nixos.org/nix/install	latest
NodeJS	apt-get (via nodesource install)	24
Pipx	uv	1.16.7
protobuf-compiler	GitHub releases (formula)	36.0
Python	uv python install	3.10, 3.11, 3.12 default, 3.13, 3.14
Rust / Cargo	Rustup	1.98.0
rustfmt	rustup	nightly (additionally)
Rustup	rustup.rs	latest
Terraform	Hashicorp releases	1.15.9
uv	docker.io	0.12.5

Container tools

Software	Installed via	Version
Docker	apt-get (docker.io package)	latest
Docker Buildx	DockerHub	0.25
manifest-tool	GitHub releases (formula)	2.2.2

Kubernetes

Software	Installed via	Version
argocd (CLI)	GitHub releases	3.5.1
conntrack	apt-get	latest
ContainerNetworkingPlugins (CNI)	GitHub releases	1.9.1
cri-dockerd	GitHub releases	0.4.6
crictl	GitHub releases	1.36.0
Helm	get-helm-3	latest
kubectl	dl.k8s.io (formula)	1.36.4
minikube	storage.googleapis.com/minikube/releases (docs)	1.38.1
stern	GitHub releases	1.34.0