When using Cronjobs with a Service Mesh Istio or Linkerd, you must make a HTTP request to the proxy's endpoint (e.g localhost:15020/quitquitquit on istio or localhost:4191/shutdown on Linkerd) to terminate the proxy when you Job as completed it's task.
This docker image impersonates the istio proxy for the shutdown phase. When disabling istio injection your app containers may still curl the localhost:15020/quitquitquit even though istio is not injected, resulting in the failure of all your cronjobs, this image fixes this issue.
Add a wget --post-data hello=shutdown http://localhost:4191/shutdown in the quitquitquit router to be able to migrate from istio to linkerd without having to redeploy the CronJobs