Please note this the next time someone in your organization or outside rails against dockerizing crucial infrastructure versus maintaining some well manicured packer/ansible/puppet/chef/salt scripts that rely on apt/deb/rpm/apk for instances that are occasionally manually tweaked in emergencies.

Docker isn't always the right choice, but I personally feel a lot more empowered to run infrastructure pieces that are dockerized because the inputs and outputs are much more explicit and easier to manipulate and change in isolation (I don't have to remember 3 directories where config could be, I just mount the one volume for example).