Debugging dockerized django (with automatically reloading development server) using VS Code's debugger

docker-compose-dev.yml

# rest of the service declaration here
    command: python -m debugpy --listen 0.0.0.0:3000 manage.py runserver 0.0.0.0:8000
# rest of the service declaration here

launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Django Debugger: Attach",
            "type": "debugpy",
            "request": "attach",
            "connect": {
                "host": "localhost",
                "port": 3000
            },
            "pathMappings": [
                {
                    "localRoot": "${workspaceFolder}/app",
                    "remoteRoot": "/app"
                }
            ]
        }
    ]
}