Fix docker.io merge step

Author: simu

.github/workflows/push.yml

@@ -242,7 +242,7 @@ jobs:
           --annotation='index:org.opencontainers.image.created=${{ steps.timestamp.outputs.timestamp }}' \
           --annotation='index:org.opencontainers.image.url=${{ github.event.repository.url }}' \
           --annotation='index:org.opencontainers.image.source=${{ github.event.repository.url }}' \
-          $(printf '${{ env.DOCKER_IMAGE }}@sha256:%s ' *)
+          $(printf '${{ env.GHCR_IMAGE }}@sha256:%s ' *)
     - name: Inspect docker.io image
       run: |
         docker buildx imagetools inspect '${{ env.DOCKER_IMAGE }}:${{ needs.get-version.outputs.tag }}'