contrib/docker/centos7

test-lfs: glob over some output changes

These changes started with 2090044a288d.  They aren't important to LFS testing.

FROM centos:centos7
RUN yum install -y \
	gcc \
	gettext \
	make \
	python-devel \
	python-docutils \
	rpm-build \
	tar

# For creating repo meta data
RUN yum install -y createrepo