Docker-Installation on Mac: Unknown MySQL server host 'mysql'

[wanicode]

I get this when i try to do ./psh.phar install in the docker-container:

> php dev-ops/generate_ssl.php
        Private/Public key already exists. Skipping
(2/28) Starting
> composer install --no-interaction --optimize-autoloader --no-suggest --no-scripts
        Loading composer repositories with package information
        Installing dependencies (including require-dev) from lock file
        Nothing to install or update
        Generating optimized autoload files

(3/28) Starting
> mysql -u 'app' -p'app' -h 'mysql' --port='3306' -e "DROP DATABASE IF EXISTS \`shopware\`"
        ERROR 2005 (HY000): Unknown MySQL server host 'mysql' (-2)

EDIT: The MySQL-Container didn't start because there were files already in the volume directory.

[janpawellek]

Same issue for me. Thank you for the hint. I had to remove the following folder:

rm -rf ./dev-ops/docker/_volumes/mysql/