You can found the MySQL version of World database here.
Another popular sample database is the Sakila database.
The Sakila sample database is designed to represent a DVD rental store.
You can found information about the MySQL version.
Pagila is a port of Sakila for MySQL to PostgreSQL.
Database scripts on GitHub : devrimgunduz/pagila.
There are examples of Docker containers on Docker Hub, like this one : mujz/pagila.