Assume that you want to test index-digest locally against MySQL v5.5:
docker pull mysql:5.5
sudo service mysql stop
docker run -e MYSQL_ALLOW_EMPTY_PASSWORD=yes -d -p 3306:3306 mysql:5.5
Wait for mysql instance to start up. Then from the repository's main directory run:
mysql --protocol=tcp -u root -v < setup.sql
./sql/populate.sh
make sql-console
```