After initiale build

[oldtime54]

Is your feature request related to a problem? Please describe.
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How can I start over with the build?

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The chroot folder is still in folder, how to start after the iso file has been created?

Describe alternatives you've considered
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I have to delete the chroot folder in order to start over.

Additional context
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It would be nice to be able to continue with modifications from modified config file.