Skip to content

Fix Cosign image digest truncation in workflow #50

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
JoshuaAFerguson merged 1 commit into from
Nov 16, 2025
Merged

Fix Cosign image digest truncation in workflow #50

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
63 changes: 48 additions & 15 deletions .github/workflows/container-images.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -99,15 +99,24 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
echo "Raw digest: ${{ steps.build.outputs.digest }}"
# Remove newlines/CRs and take first comma-separated token
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
# Get the first tag from the metadata action
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
echo "Image tag: $IMAGE_TAG"

# Use imagetools to get the manifest digest (works reliably for multi-platform builds)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Extracted digest: $DIGEST"

# Validate digest format
if [[ ! "$DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]]; then
echo "ERROR: unexpected digest format: $DIGEST"
echo "Full imagetools output:"
docker buildx imagetools inspect "$IMAGE_TAG"
exit 1
fi

IMAGE_REF="${{ env.IMAGE_PREFIX }}-controller@${DIGEST}"
echo "Image reference: $IMAGE_REF"
echo "Image reference for signing: $IMAGE_REF"
cosign sign --yes "$IMAGE_REF"

- name: Generate SBOM for Controller
Expand All @@ -124,7 +133,9 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Using digest for SBOM attestation: $DIGEST"
IMAGE_REF="${{ env.IMAGE_PREFIX }}-controller@${DIGEST}"
cosign attest --yes --type spdxjson \
--predicate sbom-controller.spdx.json \
Expand Down Expand Up @@ -207,15 +218,24 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
echo "Raw digest: ${{ steps.build.outputs.digest }}"
# Remove newlines/CRs and take first comma-separated token
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
# Get the first tag from the metadata action
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
echo "Image tag: $IMAGE_TAG"

# Use imagetools to get the manifest digest (works reliably for multi-platform builds)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Extracted digest: $DIGEST"

# Validate digest format
if [[ ! "$DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]]; then
echo "ERROR: unexpected digest format: $DIGEST"
echo "Full imagetools output:"
docker buildx imagetools inspect "$IMAGE_TAG"
exit 1
fi

IMAGE_REF="${{ env.IMAGE_PREFIX }}-api@${DIGEST}"
echo "Image reference: $IMAGE_REF"
echo "Image reference for signing: $IMAGE_REF"
cosign sign --yes "$IMAGE_REF"

- name: Generate SBOM for API
Expand All @@ -232,7 +252,9 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Using digest for SBOM attestation: $DIGEST"
IMAGE_REF="${{ env.IMAGE_PREFIX }}-api@${DIGEST}"
cosign attest --yes --type spdxjson \
--predicate sbom-api.spdx.json \
Expand Down Expand Up @@ -315,15 +337,24 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
echo "Raw digest: ${{ steps.build.outputs.digest }}"
# Remove newlines/CRs and take first comma-separated token
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
# Get the first tag from the metadata action
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
echo "Image tag: $IMAGE_TAG"

# Use imagetools to get the manifest digest (works reliably for multi-platform builds)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Extracted digest: $DIGEST"

# Validate digest format
if [[ ! "$DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]]; then
echo "ERROR: unexpected digest format: $DIGEST"
echo "Full imagetools output:"
docker buildx imagetools inspect "$IMAGE_TAG"
exit 1
fi

IMAGE_REF="${{ env.IMAGE_PREFIX }}-ui@${DIGEST}"
echo "Image reference: $IMAGE_REF"
echo "Image reference for signing: $IMAGE_REF"
cosign sign --yes "$IMAGE_REF"

- name: Generate SBOM for UI
Expand All @@ -340,7 +371,9 @@ jobs:
env:
COSIGN_EXPERIMENTAL: "true"
run: |
DIGEST=$(echo "${{ steps.build.outputs.digest }}" | tr -d '\r\n' | sed 's/,.*//')
IMAGE_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
DIGEST=$(docker buildx imagetools inspect "$IMAGE_TAG" --format '{{.Manifest.Digest}}')
echo "Using digest for SBOM attestation: $DIGEST"
IMAGE_REF="${{ env.IMAGE_PREFIX }}-ui@${DIGEST}"
cosign attest --yes --type spdxjson \
--predicate sbom-ui.spdx.json \
Expand Down
Loading