Test hermetic C++ container

PiperOrigin-RevId: 799690365

Author: quoctruong

.github/workflows/wheel_tests_nightly_release.yml

@@ -18,6 +18,9 @@
 name: CI - Wheel Tests (Nightly/Release)
 
 on:
+  pull_request:
+    branches:
+      - main
   workflow_dispatch:
     inputs:
       gcs_download_uri:
@@ -272,7 +275,7 @@ jobs:
         matrix:
           python: ["3.11", "3.13", "3.13-nogil"]
           cuda-version: [12, 13]
-    container:  "us-docker.pkg.dev/ml-oss-artifacts-published/ml-public-container/ml-build:latest"
+    container:  "us-docker.pkg.dev/ml-oss-artifacts-transient/ml-public-testing-container/ml-build:infrastructure-public-image-a9244380692c"
 
     # Verifies that JAX's release wheels can be installed
     name: "Verify release wheels install (Python ${{ matrix.python }})"