docker compose for mysql + adminer

docker-compose.yml

version: '3'

services:

  mysql-development:
    image: mysql/mysql-server:5.7
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: test-db
      MYSQL_ROOT_HOST: "%"
    ports:
      - "3308:3306"
  
  adminer:
    image: adminer:latest
    environment:
    # mysql-development from line 5
      ADMINER_DEFAULT_SERVER: mysql-development
    ports:
      - "8080:8080"