Can't load existing db in MariaDB and Wordpress

I’m new with Docker, I’m trying to migrate some WP app from a standard LAMP stack to Docker. This is my docker-compose.yml.

version: ‘2’

services:
  db:
    container_name: database
    image: mariadb
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: wordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress
    volumes:
      - ./database/data:/var/lib/mysql
      - ./database/initdb.d:/docker-entrypoint-initdb.d
    restart: always
  my_wordpress:
    image: wordpress
    container_name: my_wordpress
    depends_on:
      - db
    ports:
      - "80:80"
    volumes:
      - ./wp:/var/www/html/
    links: 
      - db:mariadb
    restart: always
    environment:
      DB_HOST: db:3306
      DB_NAME: wordpress
      DB_USER: wordpress
      DB_PASSWORD: wordpress
  wp-cli:
    image: tatemz/wp-cli
    container_name: wp-cli
    volumes_from:
      - my_wordpress
    links:
      - db:mariadb
    entrypoint: wp  
    command: "--info"
  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    container_name: phpmyadmin
    depends_on: 
      - db
    restart: always
    ports:
      - "8080:80"
    environment:
      PMA_ARBITRARY: 1
      PMA_HOST: db
      MYSQL_ROOT_PASSWORT: wordpress
  redis:
    image: redis:latest
    container_name: redis

This docker file is in the following folder structure:

- wp/ --> where my existing WP installation is stored
- database/
-- data/ --> existing database in .sql format
-- initdb.d/ --> esisting database in .sql format
- docker-compose.yml

The containers are running fine but I always get redirect to the startup WP screen for installing it from scratch. The existing files don’t get recognised and neither the database.

I’m sure I’m missing something but I can’t really see it.
Thanks in advance.