server@af4d4f345408
docker buildx stores the attestations it generates as an extra entry of the index, with the placeholder platform unknown/unknown, describing the variant b2466e48b4f2. It appears whenever a build records provenance — on by default since Docker 24 / buildx 0.11 — or an SBOM (--sbom=true); images built with plain docker build or with --provenance=false have no such entry. docker pull never fetches it by itself; docker buildx imagetools inspect and docker sbom read it.
This entry contains: SLSA provenance v1 (25.4 KiB) — no SBOM: the build did not pass --sbom=true.
It belongs to server:0.7.0, so it cannot be deleted on its own: removing it would break that index. Delete the tag or the index and the next prune untagged run (or a retention policy) removes this entry; garbage collection reclaims its bytes.
To build without attestation entries: docker buildx build --provenance=false --sbom=false …
docker pull chicor.ee/tund/server@sha256:af4d4f3454082f33e0ed317f3577f64213115056fe467203f71795999ded95f0- Digest
- af4d4f3454082f33e0ed
- Media type
- application/vnd.oci.image.manifest.v1+json
- Platform
- none — attestation entry (unknown/unknown)
- Total size
- 25.4 KiB
- Pushed
- Oct 6, 2026by
ruohki
| # | Instruction | Digest | Shared | Size |
|---|---|---|---|---|
| 1 | — | cfb234e45ac2 | unique | 25.4 KiB |
Nothing is attached to this image.
Signatures, SBOMs and provenance show up here once someone who can push attaches them.
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"artifactType": "application/vnd.docker.attestation.manifest.v1+json",
"config": {
"mediaType": "application/vnd.oci.empty.v1+json",
"digest": "sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a",
"size": 2,
"data": "e30="
},
"layers": [
{
"mediaType": "application/vnd.in-toto+json",
"digest": "sha256:cfb234e45ac2d04f2ceee1f632e5b9984e75fe5131053d09ec75f26725b2e25e",
"size": 26020,
"annotations": {
"in-toto.io/predicate-type": "https://slsa.dev/provenance/v1"
}
}
],
"subject": {
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"digest": "sha256:b2466e48b4f28d99e73ae87e64f1eb4ea3417c4191c2fad8bfaf8edc792c1bb0",
"size": 1056
}
}