title: vscode launch.json debug and open specific url
body: <p>Given the following auto-generated Visual Studio Code launch.json config:</p>
  
  <p>I'd like this to launch the browser to <code>localhost:5000/swagger</code> when I debug, but I've tried half a dozen different things and nothing works. It just opens to <code>localhost:5000</code>. What am I missing here? There's no general documentation (that I could find) on all of the attributes available aside from hitting Ctrl+space to see a list, which doesn't help much.</p>
  
  <p>I left out my failed attempts at getting this to work how I want...</p>
  
  <pre><code>{
      "name": "Launch Demo.Api",
      "type": "coreclr",
      "request": "launch",
      "preLaunchTask": "build",
      "program": "${workspaceRoot}/Demo.Api/bin/Debug/netcoreapp2.1/Demo.Api.dll",
      "args": [],
      "cwd": "${workspaceRoot}/Demo.Api",
      "stopAtEntry": false,
      "launchBrowser": {
          "enabled": true,
          "args": "${auto-detect-url}",
          "windows": {
              "command": "cmd.exe",
              "args": "/C start ${auto-detect-url}"
          },
          "osx": {
              "command": "open"
          },
          "linux": {
              "command": "xdg-open"
          }
      },
      "env": {
          "ASPNETCORE_ENVIRONMENT": "Development"
      }
  }
  </code></pre>