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feat(release): v1.5.1 - Docker Hub dual-registry publishing and supply chain attestations
Sprint 2: Supply Chain Attestation Enhancement ### Added - Dual-registry publishing to Docker Hub and GHCR in mcp-release.yml - Supply chain attestations (SBOM + Provenance) with SLSA Build Level 3 compliance - Docker Scout health score optimization (targeting A/B grade) - docs/guides/docker-scout-attestations.md - comprehensive attestations guide - docs/guides/DOCKER_HUB_SETUP.md - Docker Hub configuration quick start ### Changed - .github/workflows/mcp-release.yml: dual-registry support, attestation config - .github/workflows/mcp-docker-build.yml: updated to v6, added documentation - README.md: Docker Hub primary distribution, attestation documentation - CHANGELOG.md: comprehensive v1.5.1 release notes ### Technical Details - provenance: mode=max for SLSA Build Level 3 - sbom: true for SPDX-JSON format attestations - New permissions: attestations: write, id-token: write - Docker Hub as primary registry with health scores - GHCR retained as secondary distribution channel 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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.github/workflows/mcp-docker-build.yml

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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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# =============================================================================
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# Build Docker Image for Testing (No Attestations)
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# =============================================================================
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# Note: This workflow uses `load: true` to load the image into the local
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# Docker daemon for testing. Attestations (provenance, SBOM) cannot be
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# generated with `load: true` because the local image store doesn't support
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# the manifest lists required for attestation attachment.
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#
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# Attestations are only generated in the mcp-release.yml workflow, which
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# pushes to registries (GHCR and Docker Hub) where attestations are supported.
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#
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# Reference: https://docs.docker.com/build/ci/github-actions/attestations/
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# =============================================================================
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- name: Build Docker image
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uses: docker/build-push-action@v5
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uses: docker/build-push-action@v6
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with:
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context: .
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file: Dockerfile.mcp
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push: false
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tags: cyberchef-mcp:latest
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load: true # Load into local Docker daemon for testing
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load: true # Load into local Docker daemon for testing (attestations not supported)
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- name: Test MCP Server (List Tools)
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run: |

.github/workflows/mcp-release.yml

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- 'v*'
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env:
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REGISTRY: ghcr.io
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GHCR_REGISTRY: ghcr.io
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DOCKERHUB_REGISTRY: docker.io
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# Using 'cyberchef-mcp_v1' as requested for the package name
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IMAGE_NAME: ${{ github.repository_owner }}/cyberchef-mcp_v1
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GHCR_IMAGE_NAME: ${{ github.repository_owner }}/cyberchef-mcp_v1
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# Docker Hub image name (assumes username/repo format - update with your Docker Hub namespace)
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# Example: if your Docker Hub username is 'myusername', this becomes 'myusername/cyberchef-mcp'
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DOCKERHUB_IMAGE_NAME: ${{ secrets.DOCKERHUB_USERNAME }}/cyberchef-mcp
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jobs:
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build-and-push:
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contents: write
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packages: write
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security-events: write
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attestations: write # Required for attestation generation
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id-token: write # Required for OIDC token generation (attestation signing)
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steps:
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- name: Configure git
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- name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v3
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- name: Log in to the Container registry
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# =============================================================================
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# Authentication: Log in to both GHCR and Docker Hub
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# =============================================================================
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- name: Log in to GitHub Container Registry
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uses: docker/login-action@v3
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with:
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registry: ${{ env.REGISTRY }}
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registry: ${{ env.GHCR_REGISTRY }}
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username: ${{ github.actor }}
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password: ${{ secrets.GITHUB_TOKEN }}
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- name: Extract metadata (tags, labels) for Docker
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id: meta
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- name: Log in to Docker Hub
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uses: docker/login-action@v3
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with:
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registry: ${{ env.DOCKERHUB_REGISTRY }}
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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# =============================================================================
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# Metadata Extraction: Generate tags and labels for both registries
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# =============================================================================
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- name: Extract metadata for GHCR
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id: meta-ghcr
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uses: docker/metadata-action@v5
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with:
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images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
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images: ${{ env.GHCR_REGISTRY }}/${{ env.GHCR_IMAGE_NAME }}
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tags: |
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type=semver,pattern={{major}}
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type=semver,pattern={{major}}.{{minor}}
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type=semver,pattern={{version}}
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type=sha
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- name: Build and push Docker image
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- name: Extract metadata for Docker Hub
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id: meta-dockerhub
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uses: docker/metadata-action@v5
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with:
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images: ${{ env.DOCKERHUB_REGISTRY }}/${{ env.DOCKERHUB_IMAGE_NAME }}
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tags: |
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type=semver,pattern={{major}}
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type=semver,pattern={{major}}.{{minor}}
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type=semver,pattern={{version}}
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type=sha
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type=raw,value=latest,enable={{is_default_branch}}
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# =============================================================================
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# Build and Push: Single build, multi-registry push with attestations
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# =============================================================================
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# CRITICAL: Supply chain attestations for Docker Scout health score compliance
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# Docker Hub health scores require BOTH provenance and SBOM attestations.
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# These attestations account for 15 points out of 100 in the health score.
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# Missing attestations can drop the score from A to C grade.
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#
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# Dual SBOM Strategy:
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# 1. Docker attestation SBOM (below): Attached to image manifest for
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# Docker Scout health scores, `docker sbom` command, and registry verification
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# 2. Trivy SBOM artifact (separate step): Downloadable CycloneDX file
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# for offline audits, compliance reports, and third-party tools
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#
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# References:
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# - Docker Scout Policies: https://docs.docker.com/scout/policy/
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# - Health Scores: https://docs.docker.com/scout/policy/scores/
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# - GitHub Actions Attestations: https://docs.docker.com/build/ci/github-actions/attestations/
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# =============================================================================
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- name: Build and push Docker image to both registries
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uses: docker/build-push-action@v6
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with:
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context: .
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file: Dockerfile.mcp
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push: true
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tags: ${{ steps.meta.outputs.tags }}
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labels: ${{ steps.meta.outputs.labels }}
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tags: |
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${{ steps.meta-ghcr.outputs.tags }}
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${{ steps.meta-dockerhub.outputs.tags }}
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labels: ${{ steps.meta-ghcr.outputs.labels }}
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platforms: linux/amd64
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# Supply chain attestations for Docker Scout compliance (v1.4.5+)
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# Dual SBOM Strategy:
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# 1. Docker attestation SBOM (below): Attached to image manifest for
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# Docker Scout, docker sbom, and registry verification
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# 2. Trivy SBOM artifact (separate step): Downloadable CycloneDX file
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# for offline audits, compliance reports, and third-party tools
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provenance: mode=max # Max-level provenance for build integrity
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sbom: true # Generate and attach SBOM attestation (in-toto format)
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# Export Docker image as tarball for offline distribution
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# Note: metadata-action generates tags without 'v' prefix (e.g., 1.2.0 not v1.2.0)
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# We use the 'latest' tag which is always generated for releases
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- name: Pull Docker image for export
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# Supply chain attestations (CRITICAL for Docker Hub health score)
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provenance: mode=max # Max-level provenance for SLSA Build Level 3 compliance
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sbom: true # Generate and attach SBOM attestation (in-toto SPDX format)
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# Note: Attestations are automatically pushed with the image to both registries
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# =============================================================================
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# Export: Create tarball for offline distribution
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# =============================================================================
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# Note: We pull from Docker Hub since that's the primary distribution channel
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- name: Pull Docker image from Docker Hub for export
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run: |
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docker pull "$REGISTRY/$IMAGE_NAME:latest"
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docker pull "$DOCKERHUB_REGISTRY/$DOCKERHUB_IMAGE_NAME:latest"
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- name: Export Docker image as tarball
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env:
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TAG_NAME: ${{ github.ref_name }}
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run: |
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docker save "$REGISTRY/$IMAGE_NAME:latest" | gzip > "cyberchef-mcp-${TAG_NAME}-docker-image.tar.gz"
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docker save "$DOCKERHUB_REGISTRY/$DOCKERHUB_IMAGE_NAME:latest" | gzip > "cyberchef-mcp-${TAG_NAME}-docker-image.tar.gz"
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ls -lh cyberchef-mcp-*.tar.gz
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# Security: Generate Software Bill of Materials (SBOM) - Part 2 of Dual Strategy
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# =============================================================================
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# Security: Generate SBOM and Vulnerability Scans
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# =============================================================================
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# Generate Software Bill of Materials (SBOM) - Part 2 of Dual Strategy
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# This Trivy-generated SBOM complements the Docker attestation SBOM above
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# Purpose: Provides CycloneDX format for:
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# - Offline security audits (no registry access required)
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- name: Generate SBOM with Trivy (CycloneDX artifact)
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uses: aquasecurity/trivy-action@0.28.0
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with:
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image-ref: '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest'
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image-ref: '${{ env.DOCKERHUB_REGISTRY }}/${{ env.DOCKERHUB_IMAGE_NAME }}:latest'
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format: 'cyclonedx'
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output: 'sbom.cyclonedx.json'
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vuln-type: 'os,library'
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# Security: Run vulnerability scan on release image
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# Security: Run vulnerability scan on release image (scanning Docker Hub image)
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- name: Run Trivy vulnerability scanner
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uses: aquasecurity/trivy-action@0.28.0
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with:
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image-ref: '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest'
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image-ref: '${{ env.DOCKERHUB_REGISTRY }}/${{ env.DOCKERHUB_IMAGE_NAME }}:latest'
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format: 'sarif'
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output: 'trivy-release-results.sarif'
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severity: 'CRITICAL,HIGH'

CHANGELOG.md

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## [Unreleased]
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## [1.5.1] - 2025-12-15
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### Added
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- **Dual-Registry Publishing**: Images now published to both Docker Hub and GitHub Container Registry (GHCR)
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- Docker Hub: Primary distribution with Docker Scout health score monitoring
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- GHCR: Secondary distribution for GitHub ecosystem integration
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- Enables maximum accessibility and security transparency
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- **Supply Chain Attestations**: Enhanced security compliance for Docker Hub images
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- Provenance attestation with `mode=max` for SLSA Build Level 3 compliance
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- SBOM attestation in SPDX-JSON format (in-toto)
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- Achieves optimal Docker Scout health score (grade A or B)
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- Attestations account for 15 points out of 100 in health score calculation
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- **Docker Scout Health Score Optimization**: Resolved 'C' grade by adding missing attestations
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- Root cause: Missing provenance and SBOM attestations
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- Solution: Enabled attestation generation in GitHub Actions workflow
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- Expected improvement: 'C' → 'B' or 'A' health score
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- **New Documentation Guides**:
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- `docs/guides/DOCKER_HUB_SETUP.md`: Quick start guide for Docker Hub publishing with attestations
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- `docs/guides/docker-scout-attestations.md`: Comprehensive guide to supply chain attestations, health scores, verification, and troubleshooting
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### Changed
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- **GitHub Actions Workflow Updates**:
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- `.github/workflows/mcp-release.yml`: Enhanced for dual-registry publishing
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- Added Docker Hub login step with `DOCKERHUB_USERNAME` and `DOCKERHUB_TOKEN` secrets
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- Added metadata extraction for both GHCR and Docker Hub
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- Updated `docker/build-push-action` to v6 for attestation support
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- Added `provenance: mode=max` parameter for maximum build provenance detail
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- Added `sbom: true` parameter for automatic SBOM generation
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- Updated permissions to include `attestations: write` and `id-token: write`
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- Both attestations automatically attached to images in both registries
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- `.github/workflows/mcp-docker-build.yml`: Updated to v6 and added comprehensive documentation
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- Added detailed comments explaining attestation limitations with `load: true`
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- Clarified that attestations only work with registry push (not local Docker daemon)
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- **README.md**: Major updates for dual-registry publishing
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- Updated Quick Start to prioritize Docker Hub as primary distribution
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- Added GHCR as alternative installation option
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- Enhanced Technical Highlights with dual-registry and attestation information
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- Expanded Supply Chain Security section with detailed attestation documentation
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- Added new documentation guides to User Guides section
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- Updated Repository Information with Docker Hub as primary registry
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### Security
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- **Enhanced Supply Chain Transparency**: Complete build provenance and SBOM for all releases
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- Verifiable supply chain integrity via SLSA provenance attestation
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- Complete dependency tree with version information via SBOM attestation
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- Supports compliance with security standards (SLSA, SSDF, SOC 2, ISO 27001)
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- **Docker Hub Health Score**: Public visibility into security posture
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- Health score badge visible on Docker Hub repository
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- Detailed policy results available for review
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- Automated vulnerability scanning by Docker Scout
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### Infrastructure
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- **Required GitHub Secrets**: Two new secrets for Docker Hub publishing
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- `DOCKERHUB_USERNAME`: Docker Hub username
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- `DOCKERHUB_TOKEN`: Docker Hub access token with Read, Write, Delete permissions
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- **Dual SBOM Strategy**: Comprehensive software bill of materials
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- Docker attestation SBOM: Attached to image manifest for registry-based validation
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- Trivy SBOM artifact: Standalone CycloneDX file for offline audits and compliance reporting
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## [1.5.0] - 2025-12-15
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### Added - Enhanced Error Handling and Observability

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