unbundle20: move header parsing into the 'getunbundler' function
The dispatching will be based on the header content, so we need to move this
logic into the factory function.
FROM centos:centos5
RUN yum install -y gcc make rpm-build gettext tar
RUN yum install -y python-devel python-docutils
# For creating repo meta data
RUN yum install -y createrepo
RUN yum install -y readline-devel openssl-devel ncurses-devel zlib-devel bzip2-devel