dockerfile name in yml

Author: sandeepgupta12

.github/workflows/ppc64le.yml

@@ -31,7 +31,10 @@ jobs:
       - name: Run Docker container and execute build script
 
         run: |
-            docker run --rm -v "$(pwd):/workspace/pytorch" pytorch-ppc64le:ubi9.3 /ppc64le-build.sh
+            docker run --rm -v "$(pwd):/workspace/pytorch" pytorch-ppc64le:ubi9.3 bash -c \
+            "git config --global --add safe.directory /workspace/pytorch && \
+            git submodule update --init --recursive && \
+            /ppc64le-build.sh"
 
       - name: Archive ppc64le artifacts into zip