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build: use official buildkit ubuntu image for cdi #23776

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Nov 26, 2025
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build: use official buildkit ubuntu image for cdi #23776

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25 changes: 12 additions & 13 deletions content/manuals/build/building/cdi.md
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Original file line number Diff line number Diff line change
Expand Up @@ -209,27 +209,26 @@ GPU request is automatically added to the container builder if the host has GPU
drivers installed in the kernel. This is similar to using [`--gpus=all` with the `docker run`](/reference/cli/docker/container/run.md#gpus)
command.

> [!NOTE]
> We made a specially crafted BuildKit image because the current BuildKit
> release image is based on Alpine that doesn’t support NVIDIA drivers. The
> following image is based on Ubuntu and installs the NVIDIA client libraries
> and generates the CDI specification for your GPU in the container builder if
> a device is requested during a build. This image is temporarily hosted on
> Docker Hub under `crazymax/buildkit:v0.23.2-ubuntu-nvidia`.

Now let's create a container builder named `gpubuilder` using Buildx:

```console
$ docker buildx create --name gpubuilder --driver-opt "image=crazymax/buildkit:v0.23.2-ubuntu-nvidia" --bootstrap
$ docker buildx create --name gpubuilder --driver-opt "image=moby/buildkit:buildx-stable-1-gpu" --bootstrap
#1 [internal] booting buildkit
#1 pulling image crazymax/buildkit:v0.23.2-ubuntu-nvidia
#1 pulling image crazymax/buildkit:v0.23.2-ubuntu-nvidia 1.0s done
#1 pulling image moby/buildkit:buildx-stable-1-gpu
#1 pulling image moby/buildkit:buildx-stable-1-gpu 1.0s done
#1 creating container buildx_buildkit_gpubuilder0
#1 creating container buildx_buildkit_gpubuilder0 8.8s done
#1 DONE 9.8s
gpubuilder
```

> [!NOTE]
> We made a specially crafted BuildKit image because the current BuildKit
> release image is based on Alpine that doesn't support NVIDIA drivers. The
> following image is based on Ubuntu and installs the NVIDIA client libraries
> and generates the CDI specification for your GPU in the container builder if
> a device is requested during a build.

Let's inspect this builder:

```console
Expand All @@ -241,10 +240,10 @@ Last Activity: 2025-07-10 08:18:09 +0000 UTC
Nodes:
Name: gpubuilder0
Endpoint: unix:///var/run/docker.sock
Driver Options: image="crazymax/buildkit:v0.23.2-ubuntu-nvidia"
Driver Options: image="moby/buildkit:buildx-stable-1-gpu"
Status: running
BuildKit daemon flags: --allow-insecure-entitlement=network.host
BuildKit version: v0.23.2
BuildKit version: v0.26.2
Platforms: linux/amd64, linux/amd64/v2, linux/amd64/v3, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6
Labels:
org.mobyproject.buildkit.worker.executor: oci
Expand Down