add external checks to run

Author: chrisns

run.sh

@@ -44,6 +44,7 @@ if compgen -G "./*.tf" > /dev/null; then
 
   echo "Running policy checker..."
   checkov \
+    --external-checks-dir /policy/infra/checkov \
     --config-file /policy/infra/checkov/config.yaml \
     --directory .
 fi