transaction: use 'util.copyfile' for creating backup Using 'copyfile' (single file) instead of 'copyfiles' (tree) will ensures destination file will be overwritten. This will prevent some abort if backup file are left in place for random reason. It also seems more correct.

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FROM centos:centos6

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RUN yum install -y gcc

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RUN yum install -y python-devel python-docutils

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RUN yum install -y make

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RUN yum install -y rpm-build

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RUN yum install -y gettext

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RUN yum install -y tar

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# For creating repo meta data

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RUN yum install -y createrepo