fix min connection

docker-compose.yml

@@ -3,6 +3,10 @@ services:
   db:
     image: timescale/timescaledb:2.26.1-pg18  
     restart: unless-stopped
+    command:
+      - postgres
+      - -c
+      - max_connections=${POSTGRES_MAX_CONNECTIONS:-300}
     environment:
       POSTGRES_DB: ems
       POSTGRES_USER: ${DB_USER}