sharang/compliance-scanner-agent
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feat(pipeline): firmware SBOM via tramiton reproducible build (phase 2)
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Upgrade the firmware SBOM from analysis-only to a full reproducible build: run
tramiton's NixBackend (`seal_and_build`) over the ingested source to produce a
sealed lock whose libraries are pinned and whose firmware artifact carries a
content hash, then render the SBOM from the lock plus deep binary SCA of any
pre-compiled inputs — the complete bill of materials (toolchain + every fetched
library + the firmware image), mapped into `SbomEntry` rows.

Graceful by design: when no nix backend is available (or the build fails / times
out at 15m), it falls back to the analysis-only components (toolchain +
resolvable libraries), so a nix that can't run in the deployment never breaks a
scan.

Infra: the agent image now installs `nix-portable` (rootless, single binary;
best-effort — a failed download just leaves the analysis-only path). The nix
store lives under `NP_LOCATION=/data/compliance-scanner` — mount a PERSISTENT
volume there in the deployment, otherwise every firmware scan re-fetches
nixpkgs + cross toolchains.

Adds the `tramiton-sbom` dependency.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Sharang Parnerkar
2026-07-13 12:07:23 +02:00
co-authored by Claude Opus 4.8
parent eaaafc0621
commit 3cedb488ac
4 changed files with 153 additions and 44 deletions
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Dockerfile.agent
+13
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@@ -40,6 +40,19 @@ RUN pip3 install --break-system-packages semgrep
# Install ruff for Python linting
RUN pip3 install --break-system-packages ruff
# Install nix-portable (rootless nix) so the firmware-SBOM pipeline can drive a
# tramiton reproducible build (NixBackend). Best-effort: if the download fails,
# the agent falls back to analysis-only firmware SBOMs (never breaks a scan).
# The nix store lives under NP_LOCATION — mount a PERSISTENT volume there in the
# deployment, else every firmware scan re-fetches nixpkgs + cross toolchains.
ARG NIX_PORTABLE_VERSION=v012
RUN curl -fsSL -o /usr/local/bin/nix-portable \
"https://github.com/DavHau/nix-portable/releases/download/${NIX_PORTABLE_VERSION}/nix-portable-x86_64" \
&& chmod +x /usr/local/bin/nix-portable \
|| { rm -f /usr/local/bin/nix-portable; echo "WARN: nix-portable install skipped; firmware SBOM uses analysis-only fallback"; }
ENV NP_LOCATION=/data/compliance-scanner
RUN mkdir -p /data/compliance-scanner
COPY --from=builder /app/target/release/compliance-agent /usr/local/bin/compliance-agent
# Copy documentation for the help chat assistant