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-# Dockerfile for building Ansible image for CentOS 6, with as few additional software as possible.
-#
-# @see https://www.reddit.com/r/ansible/comments/46jrxc/release_20_in_epel/
-# @see https://bodhi.fedoraproject.org/updates/?packages=ansible
-# @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:centos6
-
-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 sudo                                      && \
-    \
-    \
-    echo "===> Installing Ansible..."                 && \
-    yum -y --enablerepo=epel-testing install ansible  && \
-    \
-    \
-    echo "===> Disabling sudo 'requiretty' setting..."    && \
-    sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/'  /etc/sudoers  || true  && \
-    \
-    \
-    echo "===> Installing handy tools (not absolutely required)..."  && \
-    yum -y install sshpass openssh-clients  && \
-    \
-    \
-    echo "===> Removing unused YUM resources..."  && \
-    yum -y remove epel-release                    && \
-    yum clean all                                 && \
-    \
-    \
-    echo "===> Adding hosts for convenience..."   && \
-    mkdir -p /etc/ansible                         && \
-    echo 'localhost' > /etc/ansible/hosts
-
-
-# default command: display Ansible version
-CMD [ "ansible-playbook", "--version" ]