在 docker 容器中使用命令行 arguments 调试 .NET 控制台应用程序

Question

I am debugging a .NET console application sitting within a docker container which works fine.

However, this is not so simple when I try to pass command line arguments via the launch.json / task.json files to the application. I would have thought this would be fairly common / simple but I have struggled to find anything at all, and my trial and error has got me nowhere. The remaining setup is pretty standard.

How would I pass command line arguments using launch.json and tasks.json? I have included my setup below.

launch.json:

    "configurations": [
    {
        "name": "Docker .NET Core Launch",
        "type": "docker",
        "request": "launch",
        "preLaunchTask": "docker-run: debug",
        "netCore": {
            "appProject": "${workspaceFolder}/MyProject/MyProject.csproj",
        },
    },

tasks.json

    {
        "type": "docker-build",
        "label": "docker-build: debug",
        "dependsOn": [
            "build"
        ],
        "dockerBuild": {
            "tag": "myproject:dev",
            "target": "base",
            "dockerfile": "${workspaceFolder}/MyProject/Dockerfile",
            "context": "${workspaceFolder}",
            "pull": true
        },
        "netCore": {
            "appProject": "${workspaceFolder}/MyProject/MyProject.csproj"
        }
    },
    {
        "type": "docker-run",
        "label": "docker-run: debug",
        "dependsOn": [
            "docker-build: debug"
        ],
        "dockerRun": {
        },
        "netCore": {
            "appProject": "${workspaceFolder}/MyProject/MyProject.csproj",
            "enableDebugging": true
        }
    },

Answer 1

You can skip these configs and utilize command arguments in the docker entry point, it'll be more easier.

Set up a new scripts file, entry.sh

#!/bin/bash
echo Arguments - "$@"

Prepare your dockerfile like this

FROM ubuntu:22.04
COPY ./entry.sh /
chmod +x entry.sh
ENTRYPOINT ["/entry.sh"]

Build and run your docker image

docker run mycontainer HelloWorld

And you'll see your arguments there !