add branch to build_docker workflow

Author: wqcstrong

.github/workflows/build_docker.yml

@@ -11,7 +11,7 @@ name: Create and publish a dev Docker image
 
 on:
   push:
-    branches: ['main']
+    branches: ['main', 'feat/page-spy-harmony']
 
 env:
   REGISTRY: ghcr.io