From 14513f081433162b28b8e85d71c207766f6fc5e0 Mon Sep 17 00:00:00 2001
From: Marco Franssen <marco.franssen@philips.com>
Date: Tue, 18 Jan 2022 14:05:41 +0100
Subject: [PATCH] Update ci workflow for provenance on multi platform
 containers

Signed-off-by: Marco Franssen <marco.franssen@philips.com>
---
 .github/workflows/ci.yaml | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index df5a7bfa..a132134d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -65,8 +65,7 @@ jobs:
     name: release
     needs: [build]
     outputs:
-      container_digest: ${{ steps.container_info.outputs.container_digest }}
-      container_tags: ${{ steps.container_info.outputs.container_tags }}
+      container_info: ${{ steps.container_info.outputs.container_info }}
       container_repos: ${{ steps.container_info.outputs.container_repos }}
 
     runs-on: ubuntu-20.04
@@ -135,10 +134,20 @@ jobs:
         id: container_info
         if: startsWith(github.ref, 'refs/tags/')
         run: |
-          export CONTAINER_DIGEST=$(make container-digest GITHUB_REF=${{ github.ref_name }})
-          echo "::set-output name=container_digest::$CONTAINER_DIGEST"
-          echo "::set-output name=container_tags::$(make container-tags CONTAINER_DIGEST="${CONTAINER_DIGEST}" | paste -s -d ',' -)"
-          echo "::set-output name=container_repos::$(make container-repos CONTAINER_DIGEST="${CONTAINER_DIGEST}" | jq --raw-input . | jq --slurp -c)"
+          function digest_tags {
+            while IFS= read -r line ; do
+              jq -n "{digest: \"$line\", tags: \$ARGS.positional}" --args $(make container-tags CONTAINER_DIGEST=$line)
+            done <<< "$(make manifest-digest GITHUB_REF=${{ github.ref_name }})"
+          }
+
+          CONTAINER_INFO="$(digest_tags | jq --slurp . -c)"
+          CONTAINER_DIGEST="$(echo "$CONTAINER_INFO" | jq --raw-output '.[0].digest')"
+          CONTAINER_REPOS="$(make container-repos CONTAINER_DIGEST="${CONTAINER_DIGEST}" | jq --raw-input . | jq --slurp -c)"
+
+          set | grep 'CONTAINER_'
+
+          echo "::set-output name=container_info::$CONTAINER_INFO"
+          echo "::set-output name=container_repos::$CONTAINER_REPOS"
 
       - name: Logout from Container registries
         if: ${{ always() }}
@@ -247,6 +256,7 @@ jobs:
     strategy:
       matrix:
         repo: ${{ fromJSON(needs.release.outputs.container_repos) }}
+        container: ${{ fromJSON(needs.release.outputs.container_info) }}
 
     steps:
       - name: Install cosign
@@ -259,7 +269,7 @@ jobs:
         with:
           command: generate
           subcommand: container
-          arguments: --repository ${{ matrix.repo }} --output-path provenance.att --digest ${{ needs.release.outputs.container_digest }} --tags ${{ needs.release.outputs.container_tags }}
+          arguments: --repository ${{ matrix.repo }} --output-path provenance.att --digest ${{ matrix.container.digest }} --tags ${{ join(matrix.container.tags, ',') }}
         env:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 
@@ -276,14 +286,14 @@ jobs:
       - name: Attach provenance to image
         run: |
           echo '${{ secrets.COSIGN_PRIVATE_KEY }}' > cosign.key
-          cosign attest --predicate provenance-predicate.att --type slsaprovenance --key cosign.key ${{ matrix.repo }}@${{ needs.release.outputs.container_digest }}
+          cosign attest --predicate provenance-predicate.att --type slsaprovenance --key cosign.key ${{ matrix.repo }}@${{ matrix.container.digest }}
         env:
           COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
 
       - name: Verify attestation
         run: |
           echo '${{ secrets.COSIGN_PUBLIC_KEY }}' > cosign.pub
-          cosign verify-attestation --key cosign.pub ${{ matrix.repo }}@${{ needs.release.outputs.container_digest }}
+          cosign verify-attestation --key cosign.pub ${{ matrix.repo }}@${{ matrix.container.digest }}
 
       - name: Logout from Container registries
         if: ${{ always() }}