Docker ComposeでMySQLとphpMyAdmin

docker-compose.yml

version: '3'

services:
  mysql_server:
    image: mysql
    container_name: mysql_container
    environment:
      MYSQL_ROOT_PASSWORD: root
      TZ: 'Asia/Tokyo'
    volumes:
      - ./docker/db/data:/var/lib/mysql  
      - ./docker/db/my.cnf:/etc/mysql/conf.d/my.cnf
      - ./docker/db/sql:/docker-entrypoint-initdb.d
    ports:
      - "3306:3306"
    command: mysqld --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
  phpmyadmin_server:
    image: phpmyadmin
    container_name: phpmyadmin_container
    depends_on:
      - mysql_server
    environment:
      - PMA_ARBITRARY=1
      - PMA_HOSTS='mysql_server'
    ports:
      - "8080:80"
    volumes:
      - ./docker/phpmyadmin/sessions:/sessions

http://localhost:8080/にて
サーバ: mysql_server
ユーザ名: root
パスワード: root