DEBUG: print base OS version

Author: yf225

.github/workflows/test.yml

@@ -42,6 +42,11 @@ jobs:
         shell: bash -l {0}
 
     steps:
+      - name: Print base OS version
+        run: |
+          echo "Host kernel: $(uname -a)"
+          cat /etc/os-release || echo "/etc/os-release missing"
+
       - name: Install system dependencies
         run: |
           set -eux