chore: Fix workflow syntax

Author: actuarysailor

.github/workflows/build-image.yaml

@@ -80,11 +80,10 @@ jobs:
     - name: Test tools image
       if: matrix.dockerfile == 'Dockerfile.tools' && github.event_name != 'schedule'
       env:
-        IMAGE_TAG: ${{ steps.meta.outputs.tags.split('\n')[0] }}
+        IMAGE_TAGS: ${{ steps.meta.outputs.tags }}
       run: |
+        IMAGE_TAG=$(echo "$IMAGE_TAGS" | head -n1)
         echo "Testing tools image: $IMAGE_TAG"
         docker run --rm "$IMAGE_TAG" terraform --version
         docker run --rm "$IMAGE_TAG" terraform-docs --version
         docker run --rm "$IMAGE_TAG" tflint --version
-        secrets: |
-          "github_token=${{ secrets.GITHUB_TOKEN }}"