Try and make CD fails more clear

.gitlab-ci.yml

@@ -26,7 +26,7 @@ deploy-live:
   script:
    - apt update
    - apt install -y curl
-   - curl https://sso.sucs.org/pull.php
+   - curl --fail-with-body https://sso.sucs.org/pull.php
   only:
    - master
   environment: live

public/pull.php

@@ -7,8 +7,9 @@ if ($retVal == 0) {
 	exit(0);
 }
 
+http_response_code(500)
 print("not ok\n");
 var_dump($retArr);
 var_dump($retVal);
 
-?>
\ No newline at end of file
+?>