update docs, add tip

Author: crazywhalecc

docs/en/guide/manual-build.md

@@ -219,6 +219,17 @@ bin/spc build bcmath,curl,openssl,ftp,posix,pcntl --build-cli
 bin/spc build phar,curl,posix,pcntl,tokenizer --build-micro
 ```
 
+::: tip
+If you need to repeatedly build and debug, you can delete the `buildroot/` and `source/` directories so that you can re-extract and build all you need from the downloaded source code package:
+
+```shell
+# remove
+rm -rf buildroot source
+# build again
+bin/spc build bcmath,curl,openssl,ftp,posix,pcntl --build-cli
+```
+:::
+
 ### Debug
 
 If you encounter problems during the compilation process, or want to view each executing shell command, 

docs/zh/guide/action-build.md

@@ -4,9 +4,7 @@ Action 构建指的是直接使用 GitHub Action 进行编译。
 
 如果你不想自行编译，可以从本项目现有的 Action 下载 Artifact，也可以从自托管的服务器下载：[进入](https://dl.static-php.dev/static-php-cli/common/)
 
-> 自托管的二进制也是由 Action 构建而来，[项目仓库地址](https://github.com/static-php/static-php-cli-hosted)，包含的扩展有：
-> bcmath,bz2,calendar,ctype,curl,dom,exif,fileinfo,filter,ftp,gd,gmp,iconv,xml,mbstring,mbregex,mysqlnd,openssl,
-> pcntl,pdo,pdo_mysql,pdo_sqlite,phar,posix,redis,session,simplexml,soap,sockets,sqlite3,tokenizer,xmlwriter,xmlreader,zlib,zip
+> 自托管的二进制也是由 Action 构建而来，[项目仓库地址](https://github.com/static-php/static-php-cli-hosted)。
 
 ## 构建方法
 

docs/zh/guide/manual-build.md

@@ -189,6 +189,17 @@ bin/spc build bcmath,curl,openssl,ftp,posix,pcntl --build-cli
 bin/spc build phar,curl,posix,pcntl,tokenizer --build-micro
 ```
 
+::: tip
+如果你需要重复构建、调试，你可以删除 `buildroot/` 和 `source/` 两个目录，这样你可以从已下载的源码压缩包重新解压并构建：
+
+```shell
+# remove
+rm -rf buildroot source
+# build again
+bin/spc build bcmath,curl,openssl,ftp,posix,pcntl --build-cli
+```
+:::
+
 ### 调试
 
 如果你在编译过程中遇到了问题，或者想查看每个执行的 shell 命令，可以使用 `--debug` 开启 debug 模式，查看所有终端日志：