Ensure kngil DB exists in init script

docker/initdb/01_kngil_DB.sql

@@ -20,6 +20,14 @@ SET xmloption = content;
 SET client_min_messages = warning;
 SET row_security = off;
 
+--
+-- Ensure target database exists (idempotent for init scripts)
+--
+\connect postgres
+SELECT 'CREATE DATABASE kngil'
+WHERE NOT EXISTS (SELECT 1 FROM pg_database WHERE datname = 'kngil')\gexec
+\connect kngil
+
 --
 -- TOC entry 6 (class 2615 OID 16413)
 -- Name: kngil; Type: SCHEMA; Schema: -; Owner: postgres
@@ -2378,4 +2386,3 @@ ALTER TABLE ONLY kngil.use_history
 --
 
 \unrestrict osPaC8Gqjay0KBMwX4hwgDvmjwF5rTGmBMzQBdxAne3SBCLMuCNQu2Xg15dPVeb
-