Does teastore maintain the integrity of containers?

[ThaysonScript]

I recently deployed several container images such as postgress and nginx along with teastore in a docker environment and observed the monitoring of linux processes with a simple top command and observed several instances of java being executed, this java process was running a tomcat server in each process created, which makes me wonder if teastore is really maintaining the integrity and isolation of containers since it runs in an environment isolated from the "container" system and these processes should not coexist on the container's host machine