Fix for linux-x86-ct5lp-224-8tpu

Signed-off-by: Vladimir Suvorov <suvorovv@google.com>

Author: mydatascience

.github/workflows/tpu-tests.yml

@@ -32,10 +32,12 @@ concurrency:
 
 jobs:
   prelim:
-    runs-on: [linux-x86-ct5lp-224-8tpu]   # use your runner labels
-    container:
-      image: us-docker.pkg.dev/tpu-prod-env-multipod/jax-stable-stack/candidate/tpu:latest
-      options: --privileged
+    runs-on: ["linux-x86-n2-32"]
+    steps:
+    - name: Test gsutil installation
+      run: which gsutil >/dev/null 2>&1 || { echo >&2 "gsutil is required but not installed. Aborting"; exit 24;}
+    - name: Cleanup old docker images
+      run: docker system prune --all --force
 
   tpu_unit_tests:
     needs: prelim