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1# Dockerfile for building Ansible image for CentOS 6, with as few additional software as possible.
2#
3# @see http://docs.ansible.com/intro_installation.html#latest-release-via-yum
4#
5# [NOTE] To fix the "sudo: sorry, you must have a tty to run sudo" issue,
6# we need to patch /etc/sudoers.
7# @see http://unix.stackexchange.com/questions/122616/why-do-i-need-a-tty-to-run-sudo-if-i-can-sudo-without-a-password
8# @see https://bugzilla.redhat.com/show_bug.cgi?id=1020147
9#
10# Version 1.0
11#
12
13
14# pull base image
15FROM centos:centos6
16
17MAINTAINER William Yeh <william.pjyeh@gmail.com>
18
19
20RUN echo "===> Installing EPEL..." && \
21 yum -y install epel-release && \
22 \
23 \
24 echo "===> Installing Ansible..." && \
25 yum -y install ansible sudo && \
26 \
27 \
28 echo "===> Disabling sudo 'requiretty' setting..." && \
29 sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/' /etc/sudoers && \
30 \
31 \
32 echo "===> Removing unused YUM resources..." && \
33 yum -y remove epel-release && \
34 yum clean all && \
35 \
36 \
37 echo "===> Adding hosts for convenience..." && \
38 mkdir -p /etc/ansible && \
39 echo '[local]\nlocalhost\n' > /etc/ansible/hosts
40
41
42# default command: display Ansible version
43CMD [ "ansible-playbook", "--version" ]