Skip to content

M12.1a: harden dual-registry post-release audit #9

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
pgousdal merged 1 commit into from
Sep 6, 2026
Merged

M12.1a: harden dual-registry post-release audit #9

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
49 changes: 41 additions & 8 deletions .github/workflows/post-release-audit.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -97,14 +97,46 @@ jobs:
set -euo pipefail
ghcr_tag="${GHCR_IMAGE}:${TAG#v}"
dockerhub_tag="${DOCKERHUB_IMAGE}:${TAG#v}"
for image_tag in "$ghcr_tag" "$dockerhub_tag"; do
docker manifest inspect "$image_tag" > /tmp/manifest.json
jq -e 'any(.manifests[]; .platform.os == "linux" and .platform.architecture == "amd64")' /tmp/manifest.json >/dev/null
jq -e 'any(.manifests[]; .platform.os == "linux" and .platform.architecture == "arm64")' /tmp/manifest.json >/dev/null

inspect_raw() {
image_tag="$1"
output="$2"
for attempt in 1 2 3 4 5 6; do
if docker buildx imagetools inspect --raw "$image_tag" > "$output"; then
return 0
fi
echo "registry metadata not ready for $image_tag (attempt $attempt/6)" >&2
sleep 10
done
echo "unable to inspect $image_tag after retries" >&2
return 1
}

inspect_raw "$ghcr_tag" /tmp/ghcr-manifest.json
inspect_raw "$dockerhub_tag" /tmp/dockerhub-manifest.json

for manifest in /tmp/ghcr-manifest.json /tmp/dockerhub-manifest.json; do
jq -e 'any(.manifests[]; .platform.os == "linux" and .platform.architecture == "amd64")' "$manifest" >/dev/null
jq -e 'any(.manifests[]; .platform.os == "linux" and .platform.architecture == "arm64")' "$manifest" >/dev/null
done
ghcr_digest="$(docker buildx imagetools inspect "$ghcr_tag" | awk '/^Digest:/ {print $2; exit}')"
dockerhub_digest="$(docker buildx imagetools inspect "$dockerhub_tag" | awk '/^Digest:/ {print $2; exit}')"
test -n "$ghcr_digest"

resolve_digest() {
image_tag="$1"
for attempt in 1 2 3 4 5 6; do
digest="$(docker buildx imagetools inspect "$image_tag" 2>/dev/null | awk '/^Digest:/ {print $2; exit}')"
if [[ "$digest" =~ ^sha256:[0-9a-f]{64}$ ]]; then
printf '%s\n' "$digest"
return 0
fi
echo "registry digest not ready for $image_tag (attempt $attempt/6)" >&2
sleep 10
done
echo "unable to resolve digest for $image_tag after retries" >&2
return 1
}

ghcr_digest="$(resolve_digest "$ghcr_tag")"
dockerhub_digest="$(resolve_digest "$dockerhub_tag")"
test "$dockerhub_digest" = "$ghcr_digest"
sh scripts/verify-exact-digest-runtime.sh "$GHCR_IMAGE" "$ghcr_digest" >/dev/null
sh scripts/verify-exact-digest-runtime.sh "$DOCKERHUB_IMAGE" "$dockerhub_digest" >/dev/null
Expand Down Expand Up @@ -155,13 +187,14 @@ jobs:
IMAGE_DIGEST: ${{ steps.image.outputs.digest }}
run: |
{
echo '### M12.1 dual-registry post-release audit'
echo '### M12.1a dual-registry post-release audit'
echo
echo "- release: $TAG"
echo "- immutable digest: $IMAGE_DIGEST"
echo '- GitHub Release/tag/commit binding: verified'
echo '- GHCR + Docker Hub digest parity: verified'
echo '- linux/amd64 + linux/arm64 manifest coverage in both registries: verified'
echo '- registry publication settling/retry policy: verified'
echo '- Cosign keyless signatures in both registries: verified'
echo '- OCI revision/version labels: verified'
echo '- non-root UID/GID 1000: verified'
Expand Down
Loading