PHP MARIADB PHPMYADMIN使用docker-compose的问题

Question

I've been this last two weeks searching how to link my phpmyadmin and my database, to create a PHP development workspace, through docker-compose but I am not able to connect to the database through the phpmyadmin port.

    version: '3'
services: 
 servicio_php:
  image: php:7.3-rc-apache
  volumes:
   - ./web/:/var/www/html
  expose:
   - "80"
  ports:
   - "80:80"
  links:
   - db

 db:
  image: mariadb:latest
  restart: always
  volumes:
    - ./Volumenes/mysql:/var/lib/mysql
  environment:
    MYSQL_ROOT_PASSWORD: root123
    MYSQL_USER: user
    MYSQL_PASSWORD: user123
    MYSQL_DATABASE: bbdd1
  expose:
    - "3306"
  ports:
    - "3306:3306"

 phpmyadmin:
  image: phpmyadmin/phpmyadmin:latest
  container_name: phpmyadmin
  environment:
   PMA_ARBITRARY: 1
   MYSQL_ROOT_PASSWORD: root123
   MYSQL_USERNAME: user
   PMA_HOST: db
   MYSQL_PASSWORD: user123
  restart: always
  ports: 
   - "8080:80"
  volumes:
   - ./sessions:/sessions/
  depends_on: 
   - db 
  links: 
   - db

I am using windows 10 version of dockers 18.06.1-ce and also when i run docker-compose up i see there are some probles with Innodb but ive read is not a problem.

I am not able to see whats wrong and probably I am not the only one with this problem.