Question about running NGC for TLT3.0

For AssertionError: Config path must be a valid unix path. No file found at: /root/.docker/config.json, please consider below solution.
You need to run docker login nvcr.io

I reproduce this issue when I try to run TLT3.0 in a docker.(see Error when trying to run gazenet notebook - #18 by Morganh) Then fix the issue via above way. See the log as below.

root@5b8d6f41d8c8:/workspace# tlt ssd run ls
Traceback (most recent call last):
File “/usr/local/bin/tlt”, line 8, in
sys.exit(main())
File “/usr/local/lib/python3.6/dist-packages/tlt/entrypoint/entrypoint.py”, line 114, in main
args[1:]
File “/usr/local/lib/python3.6/dist-packages/tlt/components/instance_handler/local_instance.py”, line 262, in launch_command
docker_logged_in()
File “/usr/local/lib/python3.6/dist-packages/tlt/components/instance_handler/utils.py”, line 129, in docker_logged_in
data = load_config_file(docker_config)
File “/usr/local/lib/python3.6/dist-packages/tlt/components/instance_handler/utils.py”, line 66, in load_config_file
“No file found at: {}”.format(config_path)
AssertionError: Config path must be a valid unix path. No file found at: /root/.docker/config.json
root@5b8d6f41d8c8:/workspace#

root@5b8d6f41d8c8:/workspace# docker login nvcr.io
Username: $oauthtoken
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
docker login | Docker Documentation

Login Succeeded

root@5b8d6f41d8c8:/workspace# tlt ssd run ls
2021-03-18 11:39:08,023 [INFO] root: No mount points were found in the /root/.tlt_mounts.json file.
2021-03-18 11:39:08,023 [WARNING] tlt.components.docker_handler.docker_handler:
Docker will run the commands as root. If you would like to retain your
local host permissions, please add the “user”:“UID:GID” in the
DockerOptions portion of the ~/.tlt_mounts.json file. You can obtain your
users UID and GID by using the “id -u” and “id -g” commands on the
terminal.
EULA.pdf README.md examples
2021-03-18 11:39:10,142 [INFO] tlt.components.docker_handler.docker_handler: Stopping container.