Vscode-docker: Error for debug python application in docker

[general03]

Hi,

I write the launch.json file in my project

{
    "configurations": [
        {
            "name": "Docker: Python - Django",
            "type": "docker",
            "request": "launch",
            "preLaunchTask": "docker-run: debug",
            "python": {
                "pathMappings": [
                    {
                        "localRoot": "${workspaceFolder}/app",
                        "remoteRoot": "/usr/src/app"
                    }
                ],
                "port": 8000,
                "projectType": "django",
                "django": true,
            },
        }
    ]
}

With this task.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "docker-build",
            "label": "docker-build",
            "platform": "python",
            "dockerBuild": {
                "tag": "myapp:latest",
                "dockerfile": "${workspaceFolder}/app/Dockerfile",
                "context": "${workspaceFolder}",
                "pull": true
            }
        },
        {
            "type": "docker-run",
            "label": "docker-run: debug",
            "dependsOn": [
                "docker-build"
            ],
            "python": {
                "args": [
                    "runserver",
                    "0.0.0.0:8000"
                ],
                "file": "manage.py"
            },
            "dockerRun": {
                "ports": [
                    {
                        "hostPort": 8000,
                        "containerPort": 8000
                    }
                ],
                "volumes": [
                    {
                        "containerPath": "/usr/src/app",
                        "localPath": "${workspaceFolder}/app"
                    }
                ]
            }
        }
    ]
}

The build works well without error and my container is up

After this build I get the message box error Invalid message 'either "program", "module", or "code" must be specified'

If I add "program", "module", or "code" attribut in launch.json, VSCode tell me that this key is not allowed.

What I miss ??

Thanks

Version: 1.49.0
Commit: e790b931385d72cf5669fcefc51cdf65990efa5d
Date: 2020-09-10T13:20:50.359Z
Electron: 9.2.1
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Linux x64 4.19.0-10-amd64

[bwateratmsft]

What version of the Docker extension and Python extension do you have?

[general03]

What version of the Docker extension and Python extension do you have?

Docker 19.03.12, build 48a66213fe and Python 3.7

[bwateratmsft]

I mean the VSCode extensions:

[general03]

I mean the VSCode extensions:

Yes sur I got it

[bwateratmsft]

Which version of the Docker and Python VSCode extensions do you have though?

[general03]

Which version of the Docker and Python VSCode extensions do you have though?

Docker extension 1.50
Python extension v2020.8.108011

And I installed now the Docker extension 1.6 and the result is the same

[bwateratmsft]

Gotcha. Yeah, both of those are recent enough they should be fine. Can you share your Dockerfile? I see that your directory structure is a little different than the default so there may be something going wrong there.

[adamterrell]

I am having the same issue. I went through the hello_django tutorial from microsoft and then I wanted to go through the container tutorial but when I go into the Docker debug mode I get this error.

[adamterrell]

I just opened the project as a folder and not as a workspace. The debug then worked as expected. I suspect that the workspace settings have to be modified.

[bwateratmsft]

@adamterrell Good to know. Workspaces frequently cause issues. Can you share the containerization tutorial you were following?

[adamterrell]

https://code.visualstudio.com/docs/containers/quickstart-python

[bwateratmsft]

Ok, I was able to reproduce this by creating a workspace. I'm taking a look now.

[bwateratmsft]

I found the issue. Basically, workspaces won't work well in this context. I'd recommend opening the folder containing the project rather than using workspaces.

I opened this issue in VSCode; without a fix for that we can't fix it here. We need to use the fetchTasks API instead of workspace config to successfully get the task information needed to enable this scenario.

[adamterrell]

Thank you.

On Thu, Sep 17, 2020 at 12:12 PM Brandon Waterloo [MSFT] <
[email protected]> wrote:

I found the issue. Basically, workspaces won't work well in this context.
I'd recommend opening the folder containing the project rather than using
workspaces.

I opened this issue https://github.com/microsoft/vscode/issues/106946
in VSCode; without a fix for that we can't fix it here.

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[bwateratmsft]

The upstream VSCode issue has been moved to the November milestone so I'll move this to our 1.9.0 milestone.

[bwateratmsft]

This may be solvable with #2289, if we (potentially) no longer need to build up a task tree.

[bwateratmsft]

The upstream issue blocking this in VSCode has been closed, so unfortunately we will not be able to fix this.