为 UserHost/CustomerHost/ChessGameHost/FishRoomHost 补回 swagger；修正服务器替换脚本的网关健康检查

deploy/server/0524-replace.sh

@@ -86,10 +86,15 @@ run_container() {
 }
 
 health() {
-  local hp; hp=$(host_port "$1")
+  local svc=$1 hp; hp=$(host_port "$svc")
   for _ in $(seq 1 15); do
     local c; c=$(curl -s -o /dev/null -w '%{http_code}' "http://127.0.0.1:$hp/health")
-    [ "$c" = "200" ] && return 0
+    if [ "$svc" = "gateway" ]; then
+      # 网关的 /health 被 Ocelot 接管，会返回 404；只要端口有 HTTP 响应即视为存活
+      [ "$c" != "000" ] && return 0
+    else
+      [ "$c" = "200" ] && return 0
+    fi
     sleep 2
   done
   return 1