Make sure docker and docker compose are both installed on the system you wish to use this site with.
Run the site with:
docker-compose up -d --force-recreate --build
Then visit http://localhost (On Mac)
If on Windows then run:
docker-machine ip
To get the IP address to connect to.
To dump the database to the local machine run:
docker exec db sh -c 'exec mysqldump --all-databases -uroot -p"$MYSQL_ROOT_PASSWORD"' > /path/on/local/machine/data-dump.sql