diff --git a/.gitea/workflows/isolation-check.yaml b/.gitea/workflows/isolation-check.yaml
index 2353d3c..4271de6 100644
--- a/.gitea/workflows/isolation-check.yaml
+++ b/.gitea/workflows/isolation-check.yaml
@@ -1,6 +1,7 @@
 name: Runner Isolation Check
 on:
   workflow_dispatch:
+  push:
 
 jobs:
   isolation-test:
@@ -28,7 +29,9 @@ jobs:
       - name: Dumping environment variables
         run: |
           echo "--- Check for parent variables ---"
-          sh -c 'printenv | grep -Pi "GITEA_RUNNER_REGISTRATION_FILE|GITEA_RUNNER_REGISTRATION_TOKEN_FILE|GITEA_RUNNER_REGISTRATION_TOKEN" || true'
+          for var in GITEA_RUNNER_REGISTRATION_FILE GITEA_RUNNER_REGISTRATION_TOKEN_FILE GITEA_RUNNER_REGISTRATION_TOKEN; do
+            printenv "$var" || echo "$var not set"
+          done
           echo "--- List all variables ---"
           printenv