Updated to actionv4

Author: peter-lxc

.github/workflows/ghcr-manual-push.yml

@@ -41,7 +41,7 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@v3
         with:
-          config-inline: |
+          buildkitd-config-inline: |
             [registry."ghrc.io"]
 
       - name: Login to Github Container Registry