install: add compression by default

install/install.ts

@@ -164,6 +164,7 @@ const Caddyfile = `\
 # 请注意在防火墙/安全组中放行端口，且部分运营商会拦截未经备案的域名。
 # For more information, refer to caddy v2 documentation.
 :80 {
+  encode zstd gzip
   log {
     output file /data/access.log {
       roll_size 1gb