docker-compose.yml

version: "3"
services:
        main_site_db:
                image: "postgres"
                environment:
                        POSTGRES_USER: postgres
                        POSTGRES_PASSWORD: postgres
                        POSTGRES_DB: main_site
                ports:
                        - 8080:5432

                volumes:
                        - ./main_site_1/postgres-data:/var/lib/postgresql/data/
        site_2:
                image: mcr.microsoft.com/mssql/server:2019-latest
                restart: always
                ports:
                        - 8081:1433
                volumes:
                        - ./site_2/mssql-data:/var/lib/mssqlql
                env_file:
                        - site_2/mssql.env

        site_3:
                image: mysql
                restart: always
                env_file:
                        - site_3/mysql.env

                ports:
                        - 3306:3306
                volumes:
                        - ./site_3/mysql-data:/var/lib/mysql