save CH logs into a named volume

docker-compose.yml

@@ -19,6 +19,7 @@ services:
     restart: always
     volumes:
       - event-data:/var/lib/clickhouse
+      - event-logs:/var/log/clickhouse-server
       - ./clickhouse/clickhouse-config.xml:/etc/clickhouse-server/config.d/logging.xml:ro
       - ./clickhouse/clickhouse-user-config.xml:/etc/clickhouse-server/users.d/logging.xml:ro
     ulimits:
@@ -44,3 +45,6 @@ volumes:
     driver: local
   event-data:
     driver: local
+  event-logs:
+    driver: local
+