Since moving to UBI minimal images we - "support" have lost access to tools that we use to troubleshoot common issues. one such example is now not being able to curl smtp endpoints. which can be VERY useful when troubleshooting smtp notification endpoints

we have many KCS detailing this method, and one new method using a bash script to create the smtp connection. we would like to continue using recognised tools rather than maintain scripts

Other team have followed this pattern: 
https://access.redhat.com/articles/4628891 

using 
https://kubernetes.io/docs/concepts/workloads/pods/ephemeral-containers/ 

The container needs to attach to an existing pod preferablly rather than restarting the pod and attaching the container

It would also be great to see this approach be used by other "observability" components aswell