ac-eluna-ts-dev-1 | touch: index.ts: Permission denied

After following the instructions for the ACore docker compose setup, I wound up with the `ac-eluna-ts-dev` service (which I didn't touch) producing these failure messages:

```
ac-eluna-ts-dev-1 | touch: index.ts: Permission denied
ac-eluna-ts-dev-1 exited with code 1 (restarting)

ac-eluna-ts-dev-1 exited with code 1 (restarting)
ac-eluna-ts-dev-1 exited with code 1 (restarting)
ac-eluna-ts-dev-1 | touch: index.ts: Permission denied
ac-eluna-ts-dev-1 | touch: index.ts: Permission denied
ac-eluna-ts-dev-1 exited with code 1 (restarting)
```

(Granted, I did modify `docker-compose.yml` by commenting out `privileged: true` on the `ac-worldserver` service, but I don't see why that would affect the `ac-eluna-ts-dev` service and, if the only side-effect is `Can't set process priority class, error: Permission denied` and some possible latency spikes that I have to manually mitigate, I consider that an acceptable trade off for limiting its exploitability.)

Start with docker-compose.yml and the ac-eluna-ts-dev service, then reproduce the setup described in the issue while comparing behavior with and without privileged: true on ac-worldserver. Trace why the service cannot touch index.ts; done means the service starts without the permission error or restart loop, with the documented setup clarified.

Written by the indexing model from the issue text.