Moved to Angular v20 and Tailwind v4 plus all related dependencies

Renamed Docker directory.

Also serving static files from FastAPI.

overlord/src/app/user/user.service.ts

@@ -1,5 +1,5 @@
 import { HttpClient } from '@angular/common/http';
-import { Injectable } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
 import { Observable } from 'rxjs/internal/Observable';
 import { catchError } from 'rxjs/operators';
 
@@ -13,10 +13,8 @@ const serviceName = 'UserService';
   providedIn: 'root',
 })
 export class UserService {
-  constructor(
-    private http: HttpClient,
-    private log: ErrorLoggerService,
-  ) {}
+  private http = inject(HttpClient);
+  private log = inject(ErrorLoggerService);
 
   get(id: string | null): Observable<User> {
     const getUrl: string = id === null ? `${url}` : `${url}/${id}`;