Create database on docker-compose startup

There is also an option to provide an init file for mysql container which will be applied each time a container is created.

database:
    image: mysql:5.7
    ports:
        - "33061:3306"
    command: --init-file /data/application/init.sql
    volumes:
        - ./init.sql:/data/application/init.sql
    environment:
        MYSQL_ROOT_USER: root
        MYSQL_ROOT_PASSWORD: secret
        MYSQL_DATABASE: homestead
        MYSQL_USER: root
        MYSQL_PASSWORD: secret

Such file (init.sql) could contain your initial database structure and data – for example:

CREATE DATABASE IF NOT EXISTS dev;
CREATE DATABASE IF NOT EXISTS test;
USE dev;
CREATE TABLE IF NOT EXISTS (...);