Implement bootstrapping as special case of "preprocessing_commands".

[lueschem]

Issue Type

• Idea/improvement

Desired Behaviour

To add more flexibility during pre-container bootstrapping the current bootstrapping implementation could be transformed into an implementation that processes a "preprocessing_commands" section. The current debootstrap implementation could then be solved as a "built-in" helper command that can be invoked from the preprocessing_commands section.

This would result in the simple but flexible workflow:

• preprocessing_commands
• playbooks
• postprocessing_commands

[lueschem]

There seems to be no need for the additional flexibility.