dockerfile name in yml

Author: sandeepgupta12

.github/workflows/ppc64le.yml

@@ -31,11 +31,7 @@ jobs:
 
       - name: Run Docker container and execute build script
         run: |
-          docker run --rm -u $(id -u):$(id -g) -v "${{ github.workspace }}:/workspace/pytorch" pytorch-ppc64le:ubi9.3 bash -c "
-            export GIT_DISCOVERY_ACROSS_FILESYSTEM=1 &&
-            git -C /workspace/pytorch submodule deinit --all --force &&
-            git -C /workspace/pytorch submodule update --init --recursive --force &&
-            /ppc64le-build.sh"
+          docker run --rm -u $(id -u):$(id -g) -v "${{ github.workspace }}:/workspace/pytorch" pytorch-ppc64le:ubi9.3 /ppc64le-build.sh