limit mail_recorder container's gpu

detect_new_folder.py

     tmp_recent = str(root_path) + str(recent_file[0])
     if target_dir != tmp_recent:
         time.sleep(5)
-        command = 'docker run --rm --name mail_recorder --gpus 1 --privileged -v /dev:/dev -v /home/mc365/sources:/sources -v /home/mc365/data/'+str(recent_file[0])+':/data/'+str(recent_file[0])+' stereolabs/zed:3.5-gl-devel-cuda11.1-ubuntu18.04 python3 /sources/recorder.py.bak'
+        command = 'docker run --rm --name mail_recorder --gpus '"device=1"' -v /dev:/dev -v /home/mc365/sources:/sources -v /home/mc365/data/'+str(recent_file[0])+':/data/'+str(recent_file[0])+' stereolabs/zed:3.5-gl-devel-cuda11.1-ubuntu18.04 python3 /sources/recorder.py.bak'
         os.system(str(command))        
     target_dir = str(root_path) + str(recent_file[0])