packaging: add support for CentOS 8
The resulting executable has not been tested in detail yet.
I ran 'hg version' and 'hg clone', which worked fine
(except for extensions acting up due to Python 3).
Differential Revision: https://phab.mercurial-scm.org/D7216
FROM centos:centos8
RUN groupadd -g %GID% build && \
useradd -u %UID% -g %GID% -s /bin/bash -d /build -m build
RUN yum install -y \
gcc \
gettext \
make \
python3-devel \
python3-docutils \
rpm-build
# For creating repo meta data
RUN yum install -y createrepo