wget -O - https://get.ispconfig.org | sh -s -- --no-dns --no-mail --roundcube --use-php=7.4,8.1
wget -O - https://get.ispconfig.org | sh -s -- --no-dns --no-mail --use-php=system
wget -O - https://get.ispconfig.org | sh -s -- --no-dns --use-php=system --no-quota --no-pma