[OpenLDAP] Custom schema freezes the image

Name and Version

bitnami/openldap:2.6.8

What architecture are you using?

amd64

What steps will reproduce the bug?

I am creating an LDAP testcontainer for Java using the bitnami/openldap:2.6.8 image. The environment variables are the following:

LDAP_ROOT: dc=example,dc=org
LDAP_ADMIN_USERNAME: admin
LDAP_ADMIN_PASSWORD: adminpassword

I have a custom schema (created in ApacheDS and then exported as OpenLDAP files).

attributetype ( 1.3.6.1.4.1.99999.1.1 NAME 'myCustomAttribute'
    DESC ''
    USAGE userApplications )
objectclass ( 1.3.6.1.4.2.99999.1.1 NAME 'myCustomType'
    DESC ''
    STRUCTURAL
    MAY myCustomAttribute )

I mount the custom schema file in /schema/custom.ldif (which is automatically added as custom schema)

What is the expected behavior?

I would expect that the image will add the schema to the openldap instance and then start up. The extra objectclass should be usable.

What do you see instead?

The logfile mentions that it's adding the custom schema:

 09:59:27.92 INFO  ==> ** Starting LDAP setup **
 09:59:27.93 INFO  ==> Validating settings in LDAP_* env vars
 09:59:27.94 INFO  ==> Initializing OpenLDAP...
 09:59:27.94 INFO  ==> Creating LDAP online configuration
 09:59:27.94 INFO  ==> Creating slapd.ldif
 09:59:27.96 INFO  ==> Starting OpenLDAP server in background
 09:59:28.96 INFO  ==> Configure LDAP credentials for admin user
 09:59:28.97 INFO  ==> Adding LDAP extra schemas
 09:59:28.98 INFO  ==> Adding custom Schema : /schema/custom.ldif ...

And then nothing more. No additional logs, the image doesn't respond anymore. Port is also not open.

Additional information

I'm guessing it has something to do with the startup function being called. Also, adjusting the LDAP_LOGLEVEL has no effect on this.

bitnami / containers