bvandeusenandClaude Opus 5
6b3ec98fa8
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Adds `docker/setup-buildx-action@v3` to build-web, build-ml and build-agent, and sets `provenance: false` / `sbom: false` on all three build-push steps. Two open issues share one root, which is why this is one change: * #3114 — the agent rebuilds a ~6.3 GB CUDA + torch image whenever the runner's local cache is cold, 9m26s against 7s warm. The default `docker` driver cannot export a registry cache at all, so the fix is unavailable until the driver moves. The cache itself is step 2, deliberately not here. * #3190 — build-agent goes red AFTER a successful push, `No such image` from the local daemon. The leading candidate is the docker driver resolving image metadata against a local store a registry-direct push never filled. The attestation flags are the load-bearing part. On the default driver they were no-ops; on the container driver, build-push-action@v5 defaults provenance to TRUE when pushing. Provenance attaches an attestation manifest, that makes the pushed tag a manifest INDEX, and `.Image.Config.Labels` does not resolve through an index — so the `fc.revision` label the reuse check reads off the channel tag would come back `<none>` on every push. Every image would rebuild forever, every lane would stay green, and the only symptom would be the bill. Same failure as #3183, through a different door; note #3127 §4 records the same shape for `platforms:`. Unverified until CI says otherwise: these jobs run INSIDE a container against a mounted docker socket, so the buildkit container is a sibling of the job container rather than a child. That works over a socket mount and has never been tried on this runner. The gate is the SECOND dev push, not this one. The images currently published were built by the old driver, so one `reuse: NOTE ... no readable fc.revision` is expected now; what must not appear is a second one. Scribe #3249. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>