Add troubleshooting note about TORCHINDUCTOR_CACHE_DIR

README.md

@@ -97,3 +97,15 @@ This usually means you have an outdated version of the Dyff SDK. Upgrade to the
 ```
 python -m pip install --upgrade dyff
 ```
+
+### `KeyError: 'getpwuid(): uid not found: 1001'`
+
+This error occurs because the Docker container runs without a user account, but a module is trying to retrieve user account information. This is often caused by the `TorchInductor` system used by `torch.compile` in the PyTorch package. If this is the issue, you will see a line like this in the stack trace:
+
+```
+File "/app/.venv/lib/python3.12/site-packages/torch/_inductor/runtime/cache_dir_utils.py", line 17, in cache_dir
+    os.environ["TORCHINDUCTOR_CACHE_DIR"] = cache_dir = default_cache_dir()
+                                                        ^^^^^^^^^^^^^^^^^^^
+```
+
+The solution is to set the `TORCHINDUCTOR_CACHE_DIR` environment variable to a path under `/tmp`, such as `/tmp/torchinductor-cache`.