What version are you running?
6.0.2
What's the URL of the page containing the problem?
n/a
What steps will reproduce the problem?

Configure LDAP auth to a server that uses a non-public certificate 
Add certificate to system-wide certificate store
Try to login


What is the expected output? What do you see instead?
Expected: Login successful.

Seen: Error in RB log output: Error authenticating with LDAP: {'result': -1, 'desc': "Can't contact LDAP server", 'ctrls': [], 'info': '(unknown error code)'}
What operating system are you using? What browser?
Docker image beanbag/reviewboard:6.0.2
Please provide any additional information below.
see https://groups.google.com/g/reviewboard/c/nMsySlScboY/m/3NlyJw4wAwAJ
Solution proposal
Add apt-get install libldap-common to Dockerfile, so the package gets installed explicitly and LDAP client uses system-wide certificate store again.

Note: https://hellosplat.com/s/beanbag/tickets/1919 may be then closed as well.