docker-compose.yml

# version: "3.3"
# services:
#   db:
#     image: mysql/mysql-server:8.0
#     restart: always
#     environment:
#       MYSQL_DATABASE: "db_1"
#       MYSQL_USER: "user"
#       MYSQL_PASSWORD: "1234"
#       MYSQL_ROOT_PASSWORD: "root_1234"
#     ports:
#       - "3307:3306"
#     expose:
#       - "3306"
#     volumes:
#       - my-db:/var/lib/mysql
# volumes:
#   my-db:

#emanager:
version: "3.3"
services:
  db:
    image: mysql/mysql-server:8.0
    restart: always
    environment:
      MYSQL_DATABASE: "emanager"
      MYSQL_USER: "user"
      MYSQL_PASSWORD: "1234"
      MYSQL_ROOT_PASSWORD: "root_1234"
    ports:
      - "3311:3306"
    expose:
      - "3306"
    volumes:
      - my-db-emanager:/var/lib/mysql
volumes:
  my-db-emanager:



#the newer one:
# version: "3.3"
# services:
#   db_1:
#     image: mysql/mysql-server:8.0
#     restart: always
#     environment:
#       MYSQL_DATABASE: "db_1"
#       MYSQL_USER: "user"
#       MYSQL_PASSWORD: "1234"
#       MYSQL_ROOT_PASSWORD: "root_1234"
#     ports:
#       - "3307:3306"
#     expose:
#       - "3306"
#     volumes:
#       - my-db-1:/var/lib/mysql

#   db_2:
#     image: mysql/mysql-server:8.0
#     restart: always
#     environment:
#       MYSQL_DATABASE: "db_2"
#       MYSQL_USER: "user"
#       MYSQL_PASSWORD: "1234"
#       MYSQL_ROOT_PASSWORD: "root_1234"
#     ports:
#       - "3308:3306"
#     expose:
#       - "3306"
#     volumes:
#       - my-db-2:/var/lib/mysql

# volumes:
#   my-db-1:
#   my-db-2: