Can't get Apache to work

Docker Desktop
1

Hi guys,
I’m relatively new to Docker. I’ve watched tutorials and experimented a bit. Now I wanted to build a development environment in Docker, but whatever I do, whatever tutorial I look at, I can’t get Apache to work.

I use Docker for Windows and run the containers on the same computer that I work on.

Here is my data:
Directory structure:
Docker
|- backups
|- configs (with php.ini and http.conf. Both currently unchanged)
|- databases
|- logs
|- www (with an index.php

<?php
phpinfo();

)
|- meinWebserver.yml

meinWebserver.yml looks like this:

version: '3.8'

name: devserver

services:
  mariadb:
    image: mariadb:latest
    container_name: mariadb
    environment:
      - MYSQL_ROOT_PASSWORD=***************
      - MYSQL_DATABASE=testdb
      - MYSQL_USER=xjuliuscaesar
      - MYSQL_PASSWORD=***************
    volumes:
      - ./database:/var/lib/mysql
    networks:
      - devnetwork
    restart: always

  webserver:
    image: php:apache
    container_name: webserver
    depends_on:
      - mariadb
    ports:
      - 80:80
      - 443:443
    volumes:
      - ./www:/var/www/html
      - ./configs/php.ini:/usr/local/etc/php/php.ini
    networks:
      - devnetwork
    restart: always
 
  phpmyadmin:
    image: phpmyadmin:latest
    container_name: phpmyadmin
    depends_on:
      - mariadb
      - webserver
    volumes:
      - ./configs/php.ini:/usr/local/etc/php/php.ini
    ports:
      - 81:80
    environment:
      - PMA_ARBITRARY=1
      - PMA_HOST=mariadb
    networks:
      - devnetwork
    restart: always

networks:
  devnetwork:
    driver: bridge
    name: devnetwork

The web server itself seems to be running, because I can access its file system via Docker.
phpMyAdmin and MariaDB are also running and in the meantime I can also log in to the database via localhost:81 with the corresponding user and password. The addition PMA_HOST=mariadb was actually missing in almost all tutorials.
What does not work is the call to localhost itself. Even if I change the port, nothing happens. The browser searches stupidly. I don’t get an error message or anything like that. It just searches for minutes and then just stops at some point.

Does anyone have any ideas that could help me?

I also had the same problem with nginx.

With best regards and thanks