修bug，完善功能

docker/server.toml

@@ -0,0 +1,12 @@
+# 容器内固定端口与持久化目录，其余参数沿用内置默认值。
+[storage]
+data_dir = "/var/lib/chusql"
+log_files = "/var/log/chusql"
+
+[server]
+listen_host = "0.0.0.0"
+port = 7777
+sudo_auth_user = ""
+
+[buffer]
+pool_size = 256