Curl again

infrastructure/backup/base/cronjob.yaml

@@ -18,9 +18,12 @@ spec:
           # run after completion of initContainers
           - name: ntfy-command-send
             image: curlimages/curl
-            command: ["curl"]
+            command:
+              - /bin/sh
+              - -c
             args:
               - >-
+                curl
                 https://ntfy.kluster.moll.re/backup
                 -H "Title: ${OPERATION}"
                 -d "Finished successfully"