Server starts twice when running npx nx serve-ssr

[franklin7301]

Current Behavior

When running npx nx serve-ssr store, the server starts twice, causing conflicts and errors. This issue occurs because both server.ts and main.server.ts contain calls to the run() function, leading to the server being started twice.

Expected Behavior

The server should only start once when running npx nx serve-ssr store.

GitHub Repo

This issue was encountered while following the example from the NX documentation: Module Federation with SSR.

Steps to Reproduce

1. Run npx create-nx-workspace@latest myorg --preset=apps
2. nx add @nx/angular
3. npx nx g @nx/angular:host apps/store --ssr --remotes=product,checkout
4. Run npx nx serve-ssr store.
5. Observe that the server starts twice.

Nx Report

Node           : 22.11.0
OS             : win32-x64
Native Target  : x86_64-windows
npm            : 10.9.0

nx                     : 20.2.2
@nx/js                 : 20.2.2
@nx/eslint             : 20.2.2
@nx/workspace          : 20.2.2
@nx/angular            : 20.2.2
@nx/devkit             : 20.2.2
@nx/eslint-plugin      : 20.2.2
@nx/module-federation  : 20.2.2
@nx/web                : 20.2.2
@nx/webpack            : 20.2.2
typescript             : 5.6.3
---------------------------------------
Community plugins:
angular-eslint : 19.0.2

Failure Logs

E:\myorg>npx nx serve-ssr store

> nx run store:serve-ssr:development

****************************************************************************************
This is a simple server for use in testing or debugging Angular applications locally.
It hasn't been reviewed for security issues.

DON'T USE IT FOR PRODUCTION!
****************************************************************************************
- Generating browser application bundles (phase: setup)...
- Generating server application bundles (phase: setup)...
(node:12920) [DEP0180] DeprecationWarning: fs.Stats constructor is deprecated.
(Use `node --trace-deprecation ...` to show where the warning was created)
[ Module Federation Manifest Plugin ] Warn Manifest will use absolute path resolution via its host at runtime, reason: publicPath='auto'
✔ Browser application bundle generation complete.
✔ Browser application bundle generation complete.
- Copying assets...
✔ Copying assets complete.
- Generating index html...
✔ Server application bundle generation complete.
✔ Server application bundle generation complete.
✔ Index html generation complete.

Compiled successfully.
./node_modules/zone.js/fesm2015/zone-node.js:163
                        throw error;
                        ^
Error: listen EADDRINUSE: address already in use :::7795
    at Server.setupListenHandle [as _listen2] (node:net:1907:16)
    at listenInCluster (node:net:1964:12)
    at Server.listen (node:net:2066:7)
    at Function.listen (E:\monorepo\myorg\dist\apps\store\server\255.js:8404:24)
    at run (./apps/store/src/server.ts:57:10)
    at Module.5965 (./apps/store/src/server.ts:69:3)
    at module (./webpack/bootstrap:22:1)
    at module (./webpack/runtime/readFile%20chunk%20loading:59:1)
    at module (./webpack/runtime/readFile%20chunk%20loading:59:1)
    at <anonymous> (./webpack/runtime/startup%20entrypoint:6:1)
Emitted 'error' event on Server instance at:
    at emitErrorNT (node:net:1943:8)
    at invokeTask (./node_modules/zone.js/fesm2015/zone-node.js:402:33)
    at runTask (./node_modules/zone.js/fesm2015/zone-node.js:159:47)
    at invokeTask (./node_modules/zone.js/fesm2015/zone-node.js:483:34)
    at apply (./node_modules/zone.js/fesm2015/zone-node.js:472:48)
    at data.args.<computed> (./node_modules/zone.js/fesm2015/zone-node.js:950:25)
    at process.processTicksAndRejections (node:internal/process/task_queues:90:21) {
  code: 'EADDRINUSE',
  errno: -4091,
  syscall: 'listen',
  address: '::',
  port: 7795
}

Node.js v22.11.0

A server error has occurred.
node exited with 1 code.
** Angular Universal Live Development Server is listening on http://localhost:4200, open your browser on http://localhost:4200 **

Package Manager Version

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Operating System

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Additional Information

No response

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