ImportError: libGL.so.1 while running locally

[suwangcompling]

Hi, I ran the atari routine following the instructions (i.e. ./run_local.sh atari r2d2 4), then checking my actors I'm getting the following error:

root@a31483e5a60d:/seed_rl/docker# CUDA_VISIBLE_DEVICES='' python3 ../atari/r2d2_main.py --run_mode=actor --logtostderr
--pdb_post_mortem  --num_actors=4 --task=1
Traceback (most recent call last):
  File "../atari/r2d2_main.py", line 24, in <module>
    from seed_rl.atari import env
  File "/seed_rl/atari/env.py", line 23, in <module>
    from seed_rl.atari import atari_preprocessing
  File "/seed_rl/atari/atari_preprocessing.py", line 23, in <module>
    import cv2
  File "/usr/local/lib/python3.6/dist-packages/cv2/__init__.py", line 5, in <module>
    from .cv2 import *
ImportError: libGL.so.1: cannot open shared object file: No such file or directory

Need help. Thanks!