fix: registry env variable

Author: vancauwe

.github/workflows/build-images-manifests.yml

@@ -67,7 +67,7 @@ jobs:
       - name: Log in to the Container registry
         uses: docker/login-action@v3.0.0
         with:
-          registry: ${{ env.REGISTRY }}
+          registry: ${{ env.REGISTRY_NAME }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}