Execute initialization sql when docker mysql starts

docker inspect mysql:5.7
"Entrypoint": [
 "docker-entrypoint.sh"
 ],

##Mount to the container/docker-entrypoint-initdb.d; 01_create_database.sql will be executed when MySQL starts
/root/mysql-5.7/init-data
  01_create_database.sql
  ##content
  create database test_database DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
  grant all privileges on `test_database`.* to 'test_user'@'%' identified by '123456';
  flush privileges;

##Mount to the container /var/lib/mysql
/root/mysql-5.7/mysql

docker run -p 33336:3306 -v /root/mysql-5.7/mysql:/var/lib/mysql -v /root/mysql-5.7/init-data:/docker-entrypoint-initdb.d -e MYSQL_ROOT_PASSWORD=123456 --name mysql_5.7 -d mysql/mysql:5.7

docker exec -ti <containerID> sh
mysql -uroot -p123456
show databases;