Docker create image with all installed applications

How can I "mirror" my whole system to a Docker image on an automated way? I wouldn't like to create only a base-image, but all my installed applications to image.

You can find some example in "Create a base image".
You have two options:

• use a distro command like debootstrap, which can install a distro base system into a subdirectory of another, already installed system.
  But that is not exactly what you want, since it wouldn't copy your own host distro content.
• use the SCRATCH image, and copy the files you want in it.