Docker compose Mysql

Question

i tried to do 2 changes on my docker-compose, but i'm didn't find how to do it. 1- I want to create 2 users. 2- I want to import a sql file from docker-compose.

version: '3.8'

services:
    mysql:
        image: mysql:8.0.21
        command: --default-authentication-plugin=mysql_native_password
        restart: always
        container_name: mysql
        environment:
            - MYSQL_ROOT_PASSWORD=root
            - MYSQL_USER="user, user2"
            - MYSQL_PASSWORD="pass, pass2"
            - MYSQL_DATABASE=templateProject
            - MYSQL_MAX_ALLOWED_PACKET=1024M
            - MYSQL_INNODB_BUFFER_POOL_SIZE=1G
            - MYSQL_INNODB_LOG_FILE_SIZE=256M
            - MYSQL_INNODB_LOG_BUFFER_SIZE=256M
        ports:
            - '3361:3360'
        volumes:
            - ./dump.sql:/my_dump.sql
    phpmyadmin:
        image: phpmyadmin
        restart: always
        container_name: phpmyadmin
        ports:
          - 8080:80
        environment:
          - PMA_ARBITRARY=1

Answer 1

For #2 you should bind mount the directory containing your sql file like this:

"./folderwithsql:/docker-entrypoint-initdb.d"

For #1 You may be able to include another sql file in your "folderwithsql" mount that includes SQL statements to create the extra user. The file would contain something similar to these:

CREATE USER 'extrauser'@'%' IDENTIFIED BY 'passwordforextrauser';
GRANT INSERT, UPDATE, SELECT, DELETE ON mynewdb.* TO 'extrauser'@'%';