How to create an application container that is deployed?

Question

Docker

Hello everyone. There are a couple of machines with deployed services. Is there any tool that would create a docker image for applications that are deployed and configured? Well, for example, I have ceph deployed on a linux machine, and I would like to package it for further distribution of this image to junior admins.

Answer 1

in general this is not possible
docker file is a list of commands that need to be executed on a 'null system' in order for the application to work
, it is almost impossible to determine this automatically, especially if there are several applications installed on the machine, what actions were taken for which applications.
in some cases, the linux package manager offers a complete description of what is needed for the application to work, unfortunately in reality it is not so simple, not all applications are correctly described, and some require manual initial configuration