Add safe.directory to git config in Docker image to fix file ownership issues

Author: brycelelbach

build/dockerfile

@@ -2,10 +2,10 @@ FROM rapidsai/devcontainers:25.10-cpp-cuda12.9
 
 COPY . /pyhpc-tutorial
 
-RUN pip install --root-user-action ignore -r /pyhpc-tutorial/build/requirements.txt
+RUN pip install --root-user-action ignore -r /pyhpc-tutorial/build/requirements.txt \
+    git config --unset-all "http.https://github.com/.extraheader" \
+    git config --global --add safe.directory /pyhpc-tutorial
 
 WORKDIR /pyhpc-tutorial/notebooks
 
-RUN git config --unset-all "http.https://github.com/.extraheader"
-
 ENTRYPOINT git pull && /bin/bash