[WIP] Fix DDK build to retrieve correct $(pwd) in Fedora 43

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>bug: Fedora 43 DDK build无法获取正确的$(pwd)</issue_title>
<issue_description>

build mode

fql@fedora:~/xxx$ sudo ddk build --target android12-5.10
Building in container: ghcr.io/ylarod/ddk:android12-5.10
make -C /opt/ddk/kdir/android12-5.10 M= modules

shell mode

fql@fedora:~/xxx$ sudo ddk shell --target android12-5.10
Starting interactive shell in: ghcr.io/ylarod/ddk:android12-5.10
root@97810d909e8d:/build# pwd
/build
root@97810d909e8d:/build# ls
Makefile  README.md  compile_commands.json  docs  src
root@97810d909e8d:/build# make
WUWA_SRC_DIR: /
WUWA_OBJ_DIR: 
make -C /opt/ddk/kdir/android12-5.10 M=/build modules
WUWA_SRC_DIR: /build
WUWA_OBJ_DIR: /build
```</issue_description>

<agent_instructions>check scripts/ddk, why ddk build missing pwd</agent_instructions>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

Fixes #3

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.