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Output correct image ID when using Docker with the containerd-snapshotter.

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Prior to this change, the following command emits the wrong image ID when buildx
uses the "docker-container" driver and Docker is configured with the
containerd-snapshotter.

$ docker buildx build --load --iidfile=img.txt

$ docker run --rm "$(cat img.txt)" echo hello
docker: Error response from daemon: No such image: sha256:4ac37e81e00f242010e42f3251094e47de6100e01d25e9bd0feac6b8906976df.
See 'docker run --help'.

The problem is that buildx is outputing the incorrect image ID in this scenario
(it's outputing the container image config digest, instead of the container
image digest used by the containerd-snapshotter).

This commit fixes this. See https://github.com/moby/moby/issues/45458.

Signed-off-by: Cesar Talledo <cesar.talledo@docker.com>
This commit is contained in:
Cesar Talledo
2025-04-21 09:49:21 -07:00
parent 674cfff1a4
commit 679407862f
3 changed files with 21 additions and 2 deletions
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9
tests/build.go
View File

@@ -399,18 +399,25 @@ func testImageIDOutput(t *testing.T, sb integration.Sandbox) {
require.Equal(t, dgst.String(), strings.TrimSpace(stdout.String()))
// read the md.json file
dt, err = os.ReadFile(filepath.Join(targetDir, "md.json"))
require.NoError(t, err)
type mdT struct {
Digest string `json:"containerimage.digest"`
ConfigDigest string `json:"containerimage.config.digest"`
}
var md mdT
err = json.Unmarshal(dt, &md)
require.NoError(t, err)
require.NotEmpty(t, md.ConfigDigest)
require.Equal(t, dgst, digest.Digest(md.ConfigDigest))
require.NotEmpty(t, md.Digest)
// verify the image ID output is correct
// XXX: improve this by checking that it's one of the two expected digests depending on the scenario.
require.Contains(t, []digest.Digest{digest.Digest(md.ConfigDigest), digest.Digest(md.Digest)}, dgst)
}
func testBuildMobyFromLocalImage(t *testing.T, sb integration.Sandbox) {