[BUG] Changing host on the fly before load is not working

[Curs3W4ll]

Hey!

I saw in the doc that it was possible to dynamically set the host of the Swagger config by retrieving it from the req object (link from the doc).

I tested it, but it does not work in my case.
I searched about this problem in the issues and saw this issue which is exactly my problem.

I'm using v5.0.0, you can find a minimal example here: minimal.zip

This example is using the swagger-auto-gen lib to generate the Swagger file, but it does not change anything for Swagger UI (FYI: It generates an OpenAPI v3 file and add a default server).
Steps to reproduce:

• Install modules npm i
• Generate Swagger file npm run swagger-gen
• Start API npm run start

The servers does not seem to be computed again according to the new host.

Did I do anything wrong?

Workaround

```typescript (req: Request, _res: Response, next: NextFunction) => { swaggerFile.host = req.get("host"); swaggerFile.servers[0].url = `http://${swaggerFile.host}/api/v1/`; // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/ban-ts-comment // @ts-ignore req.swaggerDoc = swaggerFile; next(); }, ``` Instead of ```typescript (req: Request, _res: Response, next: NextFunction) => { swaggerFile.host = req.get("host"); // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/ban-ts-comment // @ts-ignore req.swaggerDoc = swaggerFile; next(); }, ```

Available if any question.