revert: move container scan back to the container build step

Signed-off-by: Mark Sagi-Kazar <mark.sagikazar@gmail.com>

.github/workflows/artifacts.yaml

@@ -17,8 +17,6 @@ jobs:
         variant:
           - alpine
           - distroless
-    outputs:
-      version: ${{ steps.details.outputs.version }}
 
     steps:
       - name: Checkout
@@ -103,38 +101,16 @@ jobs:
             org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
             org.opencontainers.image.documentation=https://dexidp.io/docs/
 
-  container-scan:
-    name: Container scan
-    runs-on: ubuntu-latest
-    needs: container-images
-    if: github.event_name == 'push'
-    strategy:
-      matrix:
-        variant:
-          - alpine
-          - distroless
-
-    steps:
-      # Workaround for lack of matrix output support
-      - name: Calculate container image details
-        id: details
-        run: |
-          VERSION="${{ needs.container-images.outputs.version }}"
-
-          if [[ "${{ matrix.variant }}" != "alpine" ]]; then
-            VERSION="${VERSION}-${{ matrix.variant }}"
-          fi
-
-          echo ::set-output name=version::${VERSION}
-
       - name: Run Trivy vulnerability scanner
         uses: aquasecurity/trivy-action@0.2.5
         with:
           image-ref: "ghcr.io/dexidp/dex:${{ steps.details.outputs.version }}"
           format: "sarif"
           output: "trivy-results.sarif"
+        if: github.event_name == 'push'
 
       - name: Upload Trivy scan results to GitHub Security tab
         uses: github/codeql-action/upload-sarif@v1
         with:
           sarif_file: "trivy-results.sarif"
+        if: github.event_name == 'push'