Add an image for a basic slapd installation

slapd-start

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+set -eu
+
+status () {
+  echo "---> ${@}" >&2
+}
+
+set -x
+: LDAP_ROOTPASS=${LDAP_ROOTPASS}
+: LDAP_DOMAIN=${LDAP_DOMAIN}
+: LDAP_ORGANISATION=${LDAP_ORGANISATION}
+
+if [ ! -e /var/lib/ldap/docker_bootstrapped ]; then
+  status "configuring slapd for first run"
+
+  cat <<EOF | debconf-set-selections
+slapd slapd/internal/generated_adminpw password ${LDAP_ROOTPASS}
+slapd slapd/internal/adminpw password ${LDAP_ROOTPASS}
+slapd slapd/password2 password ${LDAP_ROOTPASS}
+slapd slapd/password1 password ${LDAP_ROOTPASS}
+slapd slapd/dump_database_destdir string /var/backups/slapd-VERSION
+slapd slapd/domain string ${LDAP_DOMAIN}
+slapd shared/organization string ${LDAP_ORGANISATION}
+slapd slapd/backend string HDB
+slapd slapd/purge_database boolean true
+slapd slapd/move_old_database boolean true
+slapd slapd/allow_ldap_v2 boolean false
+slapd slapd/no_configuration boolean false
+slapd slapd/dump_database select when needed
+EOF
+
+  dpkg-reconfigure -f noninteractive slapd
+
+  touch /var/lib/ldap/docker_bootstrapped
+else
+  status "found already-configured slapd"
+fi
+
+status "starting slapd"
+set -x
+exec /usr/sbin/slapd -h "ldap:///" -u openldap -g openldap -d 0