Update mz-workload-tests.yml

Updated internal container image to use for workload tests

Author: luis-real

.github/workflows/mz-workload-tests.yml

@@ -121,17 +121,14 @@ jobs:
   test:
     runs-on: [self-hosted, "${{ inputs.runner_label }}"]
     container:
-      image: python:3.8
-      credentials:
-        username: ${{ secrets.HUB_USER }}
-        password: ${{ secrets.HUB_TOKEN }} 
+      image: cache-registry.caas.intel.com/cache/library/python:slim
       env:
         http_proxy: ${{ secrets.HTTP_PROXY }}
         https_proxy: ${{ secrets.HTTPS_PROXY }}
         no_proxy: ${{ secrets.NO_PROXY }}
       volumes:
         - /tf_dataset/:/tf_dataset/
-      options: --privileged
+      options: --user root --entrypoint bash --privileged
     continue-on-error: true
     steps:
     - name: Checkout