✨ Commits existing images to git

- Implemented sync-roles.sh to synchronize Active Directory group memberships as MariaDB roles and user accounts.
- Created Containerfile for building a custom ldap2pg image with patched YAML decoding.
- Added provision-user-db.sh for provisioning user databases and roles based on LDAP synchronization.
- Introduced a new Containerfile for MariaDB with PAM authentication via pam_ldap.
- Configured PAM service for MariaDB logins and added necessary plugins for LDAP authentication.
- Implemented health checks and entrypoint scripts for MariaDB and pgpool containers.
- Enhanced PostgreSQL image with additional extensions and custom pg_hba.conf for improved security and functionality.

database/postgres/conf.d/10-extensions.conf

@@ -0,0 +1,4 @@
+# Preloaded extension libraries for this image.
+# Applied automatically to every newly initialized cluster via
+# postgresql.conf.sample (include_dir), regardless of container command.
+shared_preload_libraries = 'timescaledb,vchord,pg_hint_plan,pg_stat_statements'