centos6/Dockerfile

   1 # Dockerfile for building Ansible image for CentOS 6, with as few additional software as possible.
   2 #
   3 # @see https://www.reddit.com/r/ansible/comments/46jrxc/release_20_in_epel/
   4 # @see https://bodhi.fedoraproject.org/updates/?packages=ansible
   5 # @see http://docs.ansible.com/intro_installation.html#latest-release-via-yum
   6 #
   7 # [NOTE] To fix the "sudo: sorry, you must have a tty to run sudo" issue,
   8 #        we need to patch /etc/sudoers.
   9 #        @see http://unix.stackexchange.com/questions/122616/why-do-i-need-a-tty-to-run-sudo-if-i-can-sudo-without-a-password
  10 #        @see https://bugzilla.redhat.com/show_bug.cgi?id=1020147
  11 #
  12 # Version  1.0
  13 #
  14
  15
  16 # pull base image
  17 FROM centos:centos6
  18
  19 MAINTAINER William Yeh <william.pjyeh@gmail.com>
  20
  21
  22 RUN echo "===> Installing EPEL..."        && \
  23     yum -y install epel-release           && \
  24     \
  25     \
  26     echo "===> Installing initscripts to emulate normal OS behavior..."  && \
  27     yum -y install initscripts sudo                                      && \
  28     \
  29     \
  30     echo "===> Installing Ansible..."                 && \
  31     yum -y --enablerepo=epel-testing install ansible  && \
  32     \
  33     \
  34     echo "===> Disabling sudo 'requiretty' setting..."    && \
  35     sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/'  /etc/sudoers  || true  && \
  36     \
  37     \
  38     echo "===> Installing handy tools (not absolutely required)..."  && \
  39     yum -y install sshpass openssh-clients  && \
  40     \
  41     \
  42     echo "===> Removing unused YUM resources..."  && \
  43     yum -y remove epel-release                    && \
  44     yum clean all                                 && \
  45     \
  46     \
  47     echo "===> Adding hosts for convenience..."   && \
  48     mkdir -p /etc/ansible                         && \
  49     echo 'localhost' > /etc/ansible/hosts
  50
  51
  52 # default command: display Ansible version
  53 CMD [ "ansible-playbook", "--version" ]