fix: Pre-commit security issue

Author: actuarysailor

.github/workflows/docker-tools-image.yml

@@ -54,14 +54,12 @@ jobs:
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
 
-    - name: Extract first image tag
-      id: extract_tag
-      run: |
-        echo "tag=$(echo '${{ steps.meta.outputs.tags }}' | head -n1)" >> $GITHUB_OUTPUT
-
     - name: Test Docker image
+      env:
+        # Use the first tag from the metadata output (branch-specific tag)
+        IMAGE_TAG: ${{ fromJSON(steps.meta.outputs.tags)[0] }}
       run: |
-        echo "Testing image: ${{ steps.extract_tag.outputs.tag }}"
-        docker run --rm ${{ steps.extract_tag.outputs.tag }} terraform --version
-        docker run --rm ${{ steps.extract_tag.outputs.tag }} terraform-docs --version
-        docker run --rm ${{ steps.extract_tag.outputs.tag }} tflint --version
+        echo "Testing 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