Bookstack Ldap Issues

BookStack LDAP login failures are typically caused by incorrect user filter placeholder syntax (especially Docker Compose escaping of ${user}), TLS/SSL certificate validation issues with self-signed certs, wrong bind/base DN configuration, or SELinux blocking outbound LDAP connections. Fixes include using double $$ in docker-compose.yml to preserve the ${user} placeholder, configuring proper TLS settings or mounting CA certificates, verifying network connectivity from the container, and enabling httpd_can_network_connect on SELinux-enforcing systems.