Vuejs Deployment issues: IIS, routes - iis

Question

I am struggling with the deployment of a Vuejs front-end on my local IIS.
I would like to have my app deployed into a folder named FE_STB which is a sub-directory within my C:\inetpub\wwwroot folder.
Ideally, the URL to access the front-end would be http://localhost/FE_STB/.
In order to do so, I tried the following in vue.config.js:
module.exports = {
// Used to build the path for the css, js
baseUrl: process.env.NODE_ENV === 'production'
? '/FE_STB/'
: '/',
// The folder where the app will be built in the project directory instead of the default dist folder
// outputDir: 'Vue',
};
running npm run build generates an index.html, a favicon.ico, my img, js, css and fonts folders.
The index.html contains link tags such as (<link href=/FE_STB/css/chunk-05c5.672f5bfa.css />) and i thought it was going in the good direction.
However, it keeps returning a
404 not found error
when i try to access http://localhost/FE_STB/.
On the other hand, If I copy only the index.html into the root directory of my IIS installation (wwwroot) instead of the FE_STB subdirectory, and check the http://localhost/ URL, my app appears correctly.
However, when I start browsing the app and hit the refresh button, I get an error. For example, If I am on http://localhost/about/ on my app and refresh it with F5, I will get a 404 error as it’s looking for C:\inetpub\wwwroot\about\ directory which doesn’t exist obviously.
I also tried the web.config and the IISrewrite solutions as explained on the vuejs website or tried to add:
const router = new VueRouter({
mode: 'history',
// To define sub-directory folder for the deployment
base: 'FE_STB',
routes,
linkActiveClass: 'active',
scrollBehavior(to, from, savedPosition) {
return savedPosition || { x: 0, y: 0 };
},
});
in my router.js but it doesn’t change anything.
Any tips or directions would be really helpful.
Thank you
S.