docker support

i am running my project in docker.  i can connect from vscode with the following launch configuration. but it does not seem to be working

    {
      "type": "node",
      "request": "attach",
      "name": "Docker: Attach to Node",
      "remoteRoot": "/app",
      "localRoot": "${workspaceFolder}",
      "restart": true,
      "autoAttachChildProcesses": true
    },