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28 lines
893 B
Markdown
28 lines
893 B
Markdown
---
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title: "CNI networking"
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description: "Enhance your builder with CNI networking"
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keywords: build, buildx, buildkit, cni, network
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---
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It can be useful to use a bridge network for your builder if for example you
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encounter a network port contention during multiple builds. If you're using
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the BuildKit image, CNI is not yet available in it, but you can create
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[a custom BuildKit image with CNI support](https://github.com/moby/buildkit/blob/master/docs/cni-networking.md).
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Now build this image:
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```console
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$ docker buildx build --tag buildkit-cni:local --load .
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```
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Then [create a `docker-container` builder](https://docs.docker.com/engine/reference/commandline/buildx_create/) that
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will use this image:
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```console
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$ docker buildx create --use \
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--name mybuilder \
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--driver docker-container \
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--driver-opt "image=buildkit-cni:local" \
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--buildkitd-flags "--oci-worker-net=cni"
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```
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