Enable PyTorch nightly build CI (#17335)

* nightly build pytorch CI

* fix working dir

* change time and event name

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

.github/workflows/self-scheduled.yml

@@ -308,7 +308,7 @@ jobs:
 
       # To avoid unknown test failures
       - name: Pre build DeepSpeed *again*
-        working-directory: /workspace/transformers
+        working-directory: /workspace
         run: |
           python3 -m pip uninstall -y deepspeed
           DS_BUILD_CPU_ADAM=1 DS_BUILD_AIO=1 DS_BUILD_UTILS=1 python3 -m pip install deepspeed --global-option="build_ext" --global-option="-j8" --no-cache -v --disable-pip-version-check