$ docker-compose up
Recreating drupal-mysql ... done
Attaching to drupal-mysql, drupal-php, drupal-nginx
drupal-mysql    | HOSTNAME=a60b76018642
drupal-mysql    | MYSQL_VERSION=5.7.21-1debian8
drupal-mysql    | MYSQL_DATABASE=drupal-db
drupal-mysql    | MYSQL_PASSWORD=drupal-password
drupal-mysql    | PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
drupal-mysql    | PWD=/
drupal-mysql    | SHLVL=0
drupal-mysql    | HOME=/
drupal-mysql    | MYSQL_MAJOR=5.7
drupal-mysql    | affinity:container==9d86986155385f3df6a187e4987be2a09761e009717478911c809448bcb738aa
drupal-mysql    | GOSU_VERSION=1.7
drupal-mysql    | MYSQL_USER=drupal-user
drupal-mysql    | MYSQL_ROOT_PASSWORD=root
drupal-mysql exited with code 0