Debug Rake with Visual Studio Code

launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Rake",
            "type": "Ruby",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "program": "/usr/bin/rake",
            "env": {
                "MY_CUSTOM_ENV": "ABC"
            },
            "args": [
                "my_rake_task_name"
            ]
        }        
    ]
}