Feature/reuse root url in sitemap service (#4989)

apps/api/src/app/endpoints/sitemap/sitemap.service.ts

@@ -1,3 +1,4 @@
+import { ConfigurationService } from '@ghostfolio/api/services/configuration/configuration.service';
 import { I18nService } from '@ghostfolio/api/services/i18n/i18n.service';
 import { SUPPORTED_LANGUAGE_CODES } from '@ghostfolio/common/config';
 import { personalFinanceTools } from '@ghostfolio/common/personal-finance-tools';
@@ -6,9 +7,14 @@ import { Injectable } from '@nestjs/common';
 
 @Injectable()
 export class SitemapService {
-  public constructor(private readonly i18nService: I18nService) {}
+  public constructor(
+    private readonly configurationService: ConfigurationService,
+    private readonly i18nService: I18nService
+  ) {}
 
   public getPersonalFinanceTools({ currentDate }: { currentDate: string }) {
+    const rootUrl = this.configurationService.get('ROOT_URL');
+
     return personalFinanceTools
       .map(({ alias, key }) => {
         return SUPPORTED_LANGUAGE_CODES.map((languageCode) => {
@@ -29,12 +35,13 @@ export class SitemapService {
 
           return [
             '  <url>',
-            `  <loc>https://ghostfol.io/${languageCode}/${resourcesPath}/${personalFinanceToolsPath}/${openSourceAlternativeToPath}-${alias ?? key}</loc>`,
+            `    <loc>${rootUrl}/${languageCode}/${resourcesPath}/${personalFinanceToolsPath}/${openSourceAlternativeToPath}-${alias ?? key}</loc>`,
             `    <lastmod>${currentDate}T00:00:00+00:00</lastmod>`,
             '  </url>'
           ].join('\n');
         });
       })
+      .flat()
       .join('\n');
   }
 }