Duplicating docker container for debugging

Question

I have a running docker container. I have done some useful works in the running docker container. I have done these works not part of dockerfile, i have done it inside the c

Answer 1

1. Create a base image and run it

   docker run -it  /bin/bash
   

2. Make necessary changes

   yum install ping
   

3. Commit it with a new name

   docker commit  new_image
   

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Now if you open new_image by running

docker run -it new_image /bin/bash

You can see ping is installed in it.

Open base_image and there is no ping installed in it.

Hope it answered your question.