Remove duplicate docker.sock mount from config options

compose-snippets/act_runner_config.yaml

@@ -8,9 +8,10 @@ runner:
   capacity: 2
 
 container:
-  # Pass the host Docker socket into every job container
+  # Use the host Docker socket for job containers
   docker_host: unix:///var/run/docker.sock
-  options: -v /var/run/docker.sock:/var/run/docker.sock
+  # Note: do NOT add -v /var/run/docker.sock here — the compose already mounts it
+  # and duplicating it causes "Duplicate mount point" errors
   privileged: true
   valid_volumes:
     - /var/run/docker.sock