example.com/customer1
example.com/customer2
etc..

app.customer1domain.net -> example.com

app.customer1domain.net (should rewrite to example.com/customer1)

@NgModule({
    imports: [
        RouterModule.forRoot([
            {
                path: ":customerName",
                component: CustomerWrapperComponent,
                children: [
                    {
                        path: "",
                        component: CustomerComponent
                    },
                    {
                        path: "content",
                        component: ContentComponent
                    },
                    {
                        path: "about",
                        component: AboutComponent
                    }
            ...

let customerName = this.route.snapshot.params["customerName"];

// User customerName to load customer specific content

http://example.com/customer1
http://app.customer1domain.net