Zombies are not uncommon to see for an app running in a container that forks off other processes.  This isn&#x27;t every program but forking processes is pretty common, enough so to be worrisome.<p>For instance, some programs watch the Docker event stream and can reload, say, HAproxy configuration to automatically load balance any new containers which come up.  In my experience, running such a program in a container can make reloading the HAproxy process frequently tend to create a huge variety of zombie processes - and once they&#x27;re present, zombies are difficult to eliminate without a reboot.