diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index cd1b6320f..528a5ef6c 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -122,7 +122,7 @@ jobs:
           IMAGE_NAME: ${{ env.IMAGE_NAME }}
       - name: Inspect
         run: |
-          ref='${{ github.ref == ''refs/heads/main'' && ''latest'' || ''dev'' }}'
+          if [ "$GITHUB_REF" = "refs/heads/main" ]; then ref=latest; else ref=dev; fi
           docker buildx imagetools inspect "${REGISTRY}/${IMAGE_NAME}:${ref}"
         env:
           REGISTRY: ${{ env.REGISTRY }}