buildkit

Not Our Image

This image is not built (or modified or maintained) by, nor has any direct affiliation with us. But like many other FOSS, we like and trust it enough and may (or may not) use it ourselves. Any issues/questions/support regarding this image that is not relevant to this documentation or snippets go to the actual owner or maintainers.

Concurrent, Cache-efficient, and Dockerfile-agnostic Builder Toolkit

This is the official image of buildkit to build multi-architecture containers on the same host machine with a few neat additional features. Versioned accordingly with releases from /moby/buildkit.

Get the Image¶

Docker Hub

Pull the image from Docker Hub.

docker pull moby/buildkit

Run¶

We can run the builder with like the following,

buildxdaemonlessrootless

First we create the builder instance (requires docker-buildx plugin),

docker buildx create \
  --name builder \
  --config $PWD/config.toml \
  --driver docker-container \
  --driver-opt "image=moby/buildkit:latest"  \
  --platform linux/amd64 \
  --use

Then we run the build inside the builder instance with

docker buildx build \
  --load \
  --builder builder \
  --progress plain \
  --platform linux/amd64 \
  --no-cache=true \
  --pull \
  --label org.opencontainers.image.base.name="scratch" \
  --build-arg IMAGEBASE=scratch \
  --build-arg http_proxy= \
  --build-arg https_proxy= \
  --build-arg no_proxy= \
  --compress \
  --file $PWD/Dockerfile \
  --force-rm \
  --rm \
  --tag <registry>/<organization>/<repo>:<tag> \
  .

After the build, remove the builder instance with

docker buildx rm builder

docker run --rm -it \
  --entrypoint buildctl-daemonless.sh \
  --privileged \
  -v $PWD:/tmp/work \
moby/buildkit \
  build \
  --frontend dockerfile.v0 \
  --local context=/tmp/work \
  --local dockerfile=/tmp/work

docker run --rm -it \
  --entrypoint buildctl-daemonless.sh \
  --security-opt seccomp=unconfined \
  --security-opt apparmor=unconfined \
  -e BUILDKITD_FLAGS=--oci-worker-no-process-sandbox \
  -v $PWD:/tmp/work \
moby/buildkit:rootless \
  build \
  --frontend dockerfile.v0 \
  --local context=/tmp/work \
  --local dockerfile=/tmp/work

Also,

See the Dockerfile Reference for buildx-specific instructions or arguments.
Refer to the rootless or kubernetes examples docs as per your usecase.

That's all folks! Happy containerizing!