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Merge pull request #20612 from dvdksn/bake-dedup-localctx 

build(bake): automatically deduplicate context transfers
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David Karlsson 2024-09-10 20:59:47 +02:00 committed by GitHub
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content/manuals/build/bake/contexts.md
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@ -93,6 +93,25 @@ multiple Dockerfiles that can't be easily merged into one.
## Deduplicate context transfer ## Deduplicate context transfer
> **Note**
>
> As of Buildx version 0.17.0 and later, Bake automatically deduplicates
> context transfer for targets that share the same context. In addition to
> Buildx version 0.17.0, the builder must be running BuildKit version 0.16.0 or
> later, and the Dockerfile syntax must be `docker/dockerfile:1.10` or later.
>
> If you meet these requirements, you don't need to manually deduplicate
> context transfer as described in this section.
>
> - To check your Buildx version, run `docker buildx version`.
> - To check your BuildKit version, run `docker buildx inspect --bootstrap` and
> look for the `BuildKit version` field.
> - To check your Dockerfile syntax version, check the `syntax`
> [parser directive](/reference/dockerfile.md#syntax) in your Dockerfile. If
> it's not present, the default version whatever comes bundled with your
> current version of BuildKit. To set the version explicitly, add
> `#syntax=docker/dockerfile:1.10` at the top of your Dockerfile.
When you build targets concurrently, using groups, build contexts are loaded When you build targets concurrently, using groups, build contexts are loaded
independently for each target. If the same context is used by multiple targets independently for each target. If the same context is used by multiple targets
in a group, that context is transferred once for each time it's used. This can in a group, that context is transferred once for each time it's used. This can