docker-compose.yml

version: '3'

# To connect PostgreSQL:
#   $ docker-compose exec postgres psql -U postgres
#
# To connect MySQL:
#   $ docker-compose exec mysql mysql -u mysql -p=abcd1234
#
# To connect Redis:
#   $ docker-compose exec redis redis-cli

services:
  postgres:
    image: postgres:13.1-alpine
    ports:
    - "5432:5432"
    volumes:
    - postgres_data:/var/lib/postgresql/data
    environment:
      LANG: "C.UTF-8"
      POSTGRES_USER: "postgres"
      POSTGRES_PASSWORD: "abcd1234"

  mysql:
    image: mysql:5.6.50
    ports:
    - "3306:3306"
    volumes:
    - mysql_data:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: "abcd1234"
      MYSQL_DATABASE: "mysql"
      MYSQL_USER: "mysql"
      MYSQL_PASSWORD: "abcd1234"

  redis:
    image: redis:6.0.9-alpine3.12
    ports:
    - "6379:6379"
    volumes:
    - redis_data:/data

volumes:
  postgres_data:
  mysql_data:
  redis_data: