fix repo name

.github/workflows/build.yaml

@@ -9,7 +9,7 @@ on:
 # Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ env.GITHUB_REPOSITORY_OWNER }}/comfyui
+  IMAGE_NAME: ${{ github.actor }}/comfyui
 
 # There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
 jobs: