Information
https://zeltser.com/security-risks-and-benefits-of-docker-application/
Solution
Periodically check your container inventory per host and clean up the containers that are
not needed using the below command-
$> docker rm $INSTANCE_ID
For example,
$> docker rm e3a7a1a97c58
Impact-If you keep way too few number of containers per host, then perhaps you are not utilizing
your host resources very adequately.
Default Value-By default, Docker does not restrict the number of containers you may have on a host.