contrib/packaging/docker/centos7

py3: moar passing tests

Differential Revision: https://phab.mercurial-scm.org/D5055

FROM centos:centos7

RUN groupadd -g 1000 build && \
    useradd -u 1000 -g 1000 -s /bin/bash -d /build -m build

RUN yum install -y \
	gcc \
	gettext \
	make \
	python-devel \
	python-docutils \
	rpm-build \
	tar

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