[fedora-build-service] #10: image_builder doesn't clean up after itself

[fedora-badges]

#10: image_builder doesn't clean up after itself
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 Reporter:  tflink          |      Owner:  somebody
     Type:  defect          |     Status:  new
 Priority:  major           |  Milestone:  Initial Deployment
Component:  Image Building  |    Version:
 Keywords:                  |
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 In a system where the builders are either disposable VMs or mock chroots
 that are destroyed every time, not deleting work files after a build or
 before a new build isn't a big deal.

 However, the system currently re-uses build environments and there can be
 problems with image building when the environment is re-used and not
 cleaned. I've seen this most often when the first environment is using a
 different kernel version from the current build.

 If we end up using disposable virtual machines or switch to using mock,
 this can be closed but for the short term, it would be wise to check for
 empty work dirs before building and delete them if they aren't empty.

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Ticket URL: <https://fedorahosted.org/fedora-build-service/ticket/10>
fedora-build-service <https://fedorahosted.org/fedora-build-service>
A service to build fedora images with a somewhat arbitrary package set from the standard
fedora repos or builds from koji.