docker-openldap/image/service/slapd/daemon.sh

#!/bin/bash -e

# Reduce maximum number of number of open file descriptors to 1024
# otherwise slapd consumes two orders of magnitude more of RAM
# see https://github.com/docker/docker/issues/8231
ulimit -n 1024

exec /usr/sbin/slapd -h "ldap://$HOSTNAME ldaps://$HOSTNAME ldapi:///" -u openldap -g openldap -d $LDAP_LOG_LEVEL