Add code-server integration with custom configuration

- Remove systemctl commands from Dockerfile (incompatible with containers)
- Add code-server auto-start in entrypoint.sh on port 30145
- Set /mnt as default working directory for code-server
- Configure proper permissions for /mnt directory

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -63,11 +63,10 @@ RUN apt-get install -y fcitx5 --fix-missing
 RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 
 ## code server
-curl -fsSL https://code-server.dev/install.sh | sh
-sudo systemctl enable --now code-server@$USER
+RUN curl -fsSL https://code-server.dev/install.sh | sh
 
 ## PlayWright Chrome
-npx playwright install chrome
+RUN npx playwright install chrome
 
 # git information
 RUN git config --global user.email "user@mail.com"