Docker compose MySQL + PHPMyadmin

docker-compose.yml

version: '3.1'

services:

  db:
    image: mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: CHANGE_THIS_PASSWORD
      MYSQL_DATABASE: test_db
    ports:
      - "3308:3306"
    volumes:
      - ~/workspace:/workspace

  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    restart: always
    environment:
      PMA_HOST: db
      PMA_USER: root
      PMA_PASSWORD: CHANGE_THIS_PASSWORD
    ports:
      - "8080:80"