Почему не подключается БД к сайту laravel в docker?

version: "3.1"
services:
     webserver:
      image: nginx:alpine
      container_name: 72-webserver
      working_dir: /www
      volumes:
          - ./docker/nginx/nginx.conf:/etc/nginx/conf.d/nginx.conf/
          - ./docker/logs/error.log:/var/log/nginx/error.log
          - ./docker/logs/access.log:/var/log/nginx/access.log
          - ./www:/var/www
      ports:
        - "80:80"
 
    php-fpm:
      build: docker/php-fpm
      container_name: 72-php-fpm-my
      working_dir: /www
      volumes:
        - ./www:/var/www
        - ./docker/php-fpm/php-ini-overrides.ini:/etc/php/7.2/fpm/conf.d/99-overrides.ini
        - ./docker/php-fpm/php.ini:/etc/php/7.2/fpm/php.ini
    
    mysql:
      image: mysql:5.7
      container_name: 72-mysql
      volumes:
        - ./db_data:/var/lib/mysql
        - ./docker/logs/mysql.log:/var/log/mysql/mysql.log
      environment:
        - MYSQL_ROOT_PASSWORD=password
        - MYSQL_DATABASE=db
        - MYSQL_USER=user
        - MYSQL_PASSWORD=password
      ports:
        - "8082:3306"

    phpmyadmin:
      image: phpmyadmin/phpmyadmin
      links:
          - mysql
      ports:
          - 8183:80
      environment:
          MYSQL_USERNAME: user
          MYSQL_ROOT_PASSWORD: password
          PMA_ARBITRARY: 1

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=8183
DB_DATABASE=novadent
DB_USERNAME=root
DB_PASSWORD=password