Tasks

.env.example
    ✅ create new variables
        DAFAULT_USER: admin
        DEFAULT_PASSWORD: changeme
        DEFAULT_EMAIL: admin@example.com

    ✅ modify existing variables to use these 3 new variables like 
    NEXTCLOUD_ADMIN_USER=${DEFAULT_USER}
    except for QBITTORRENT_USER=admin should stay as is
    the goal is ease of setup for the user

✅ Then update env-configuration.md