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# Dockerfile for building Ansible image for CentOS 7, with as few additional software as possible.
#
# @see http://docs.ansible.com/intro_installation.html#latest-release-via-yum
#
# [NOTE] To fix the "sudo: sorry, you must have a tty to run sudo" issue,
# we need to patch /etc/sudoers.
# @see http://unix.stackexchange.com/questions/122616/why-do-i-need-a-tty-to-run-sudo-if-i-can-sudo-without-a-password
# @see https://bugzilla.redhat.com/show_bug.cgi?id=1020147
#
# Version 1.0
#
# pull base image
FROM centos:centos7
MAINTAINER William Yeh <william.pjyeh@gmail.com>
RUN echo "===> Installing EPEL..." && \
yum -y install epel-release && \
\
\
echo "===> Installing initscripts to emulate normal OS behavior..." && \
yum -y install initscripts && \
\
\
echo "===> Installing Ansible..." && \
yum -y install ansible sudo && \
\
\
echo "===> Disabling sudo 'requiretty' setting..." && \
sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/' /etc/sudoers && \
\
\
echo "===> Removing unused YUM resources..." && \
yum -y remove epel-release && \
yum clean all && \
\
\
echo "===> Adding hosts for convenience..." && \
mkdir -p /etc/ansible && \
echo '[local]\nlocalhost\n' > /etc/ansible/hosts
# default command: display Ansible version
CMD [ "ansible-playbook", "--version" ]
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