Update build.yaml

Author: jimboid

.github/workflows/build.yaml

@@ -44,7 +44,7 @@ jobs:
         uses: docker/login-action@v3.6.0
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
+          username: ${{ github.repository_owner }}
           password: ${{ secrets.BUILD_TOKEN }}
 
       - name: Set up Docker Buildx
@@ -101,7 +101,7 @@ jobs:
         uses: docker/login-action@v3.6.0
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
+          username: ${{ github.repository_owner }}
           password: ${{ secrets.BUILD_TOKEN }}
 
       - name: Set up Docker Buildx