Remove `assert not is_docker()` from GitHub checks (#8813)

utils/general.py

@@ -316,7 +316,6 @@ def check_git_status(repo='ultralytics/yolov5'):
     msg = f', for updates see {url}'
     s = colorstr('github: ')  # string
     assert Path('.git').exists(), s + 'skipping check (not a git repository)' + msg
-    assert not is_docker(), s + 'skipping check (Docker image)' + msg
     assert check_online(), s + 'skipping check (offline)' + msg
 
     splits = re.split(pattern=r'\s', string=check_output('git remote -v', shell=True).decode())