docker-compose.yml

version: '3'

services:
  mariadb-a:
    image: mariadb
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: "true"
      MYSQL_DATABASE: vapor_database
      MYSQL_USER: vapor_username
      MYSQL_PASSWORD: vapor_password
    ports:
      - 3306:3306
  mariadb-b:
    image: mariadb
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: "true"
      MYSQL_DATABASE: vapor_database
      MYSQL_USER: vapor_username
      MYSQL_PASSWORD: vapor_password
    ports:
      - 3307:3306
  mysql-a:
    image: mysql:8.0
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: "true"
      MYSQL_DATABASE: vapor_database
      MYSQL_USER: vapor_username
      MYSQL_PASSWORD: vapor_password
    ports:
      - 3306:3306
  mysql-b:
    image: mysql:8.0
    environment:
      MYSQL_ALLOW_EMPTY_PASSWORD: "true"
      MYSQL_DATABASE: vapor_database
      MYSQL_USER: vapor_username
      MYSQL_PASSWORD: vapor_password
    ports:
      - 3307:3306