Remote Docker Container Debugging with VSCode (어디서도 알려주지 않는...)

Remote Docker Container 를 VSCode 상에서 Debugging 하는 방법에 대해 알아보자.
(설명이 끝나고 영상 뒷부분에 빠르게 훑어보기 영상이 준비되어 있습니다.)
(The overall procedures without explanation will be continued after the explanation.)

Procedures:
https://docs.google.com/presentation/d/1ViKoQNlWbgDolt_Im1QffU1sjTsamfpoStnPDTYqT-Y/edit?usp=sharing

1. In VSCode, add settings.json
ex) "docker.host": "tcp://localhost:23750"

2. In Terminal, "ssh -NL localhost:23750:/var/run/docker.sock user@hostname"
ex) ssh -NL localhost:23750:/var/run/docker.sock [email protected]

3. In VSCode, Install new extension "Remote-Containers" in VCCode
4. In VSCode, "Remote-Containers:Attach to Running Container" in Command Palette
5. In VSCode, Install new extension "Python Extension Pack" on Remote Docker Container

6. In VSCode, In Run and Debug, edit configurations in launch.json, Add Following Lines
{
"version":"0.2.0",
"configurations":[
{
"name": "Python: train.py",
//"name":"Python: Current File",
"type": "python",
"request": "launch",
//"program": "${file}",
"program":"${workspaceFolder}/train.py",
"console": "integratedTerminal",
"env":{"CUDA_VISIBLE_DEVICES":"0,1,2,3"},
"args":["--data","CUB","--epoch","40","conv-cam"]
}
]
}

7. Run & Debugging

References:
1. Connecting Remote Docker Container in VSCode
https://stackoverflow.com/questions/60425053/vs-code-connect-a-docker-container-in-a-remote-server/6172879 #61728799

2. Connect to remote Docker over SSH
https://code.visualstudio.com/docs/containers/ssh

3. Python Debugging in VSCode
https://code.visualstudio.com/docs/python/debugging