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build: clarify default image store limitation 

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>
This commit is contained in:
David Karlsson 2023-11-08 18:38:50 +01:00
parent ab7ad47d55
commit 13980d45cb
1 changed files with 13 additions and 0 deletions
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13
content/build/attestations/_index.md
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@ -47,6 +47,19 @@ You can opt in to add either the SBOM or provenance attestation type, or both.
$ docker buildx build --sbom=true --provenance=true .
```
> **Note**
>
> The default image store doesn't support attestations. If you're using the
> default image store and you build an image using the default `docker` driver,
> or using a different driver with the `--load` flag, the attestations are
> lost.
>
> To make sure the attestations are preserved, you can:
>
> - Use a `docker-container` driver with the `--push` flag to push the image to
> a registry directly.
> - Enable the [containerd image store](../../desktop/containerd/_index.md).
> **Note**
>
> Provenance attestations are enabled by default, with the `mode=min` option.