VSCode: Unable to set breakpoint outside initial launch module

Question

I have installed the node project Parsoid from its source repo.

I opened the project root dir with VSCode then added a basic passthru config.yaml:

worker_heartbeat_timeout: 300000

logging:
    level: debug

services:
  - module: lib/index.js
    entrypoint: apiServiceWorker
    conf:

        # Configure Parsoid to point to your MediaWiki instances.
        mwApis:
        - # This is the only required parameter,
          # the URL of you MediaWiki API endpoint.
          uri: 'https://en.wikipedia.org/w/api.php'
          domain: 'en.wikipedia.org'  # optional

I can run the app with:

http://localhost:8000/en.wikipedia.org/v3/page/html/Apple

I am now ready to inspect the code with the debugger. I add this launch.json:

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "node",
            "request": "launch",
            "name": "Launch Program",
            "program": "${workspaceFolder}/bin/server.js"
        }
    ]
}

When I launch with the debugger, the breakpoint I added to bin/server.js is recognized. However, anything outside this dir is ignored (stating that it can't verify the other breakpoints).

These breakpoints are set but not bounded. What should I modify in my config file to get them bounded?