1 # Dockerfile for building Ansible 1.9 image for CentOS 7, with as few additional software as possible.
3 # @see http://docs.ansible.com/intro_installation.html#latest-release-via-yum
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
17 MAINTAINER William Yeh <william.pjyeh@gmail.com>
21 # @see https://hub.docker.com/_/centos/
24 RUN echo "===> Enabling systemd..." && \
25 (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
26 rm -f /lib/systemd/system/multi-user.target.wants/*; \
27 rm -f /etc/systemd/system/*.wants/*; \
28 rm -f /lib/systemd/system/local-fs.target.wants/*; \
29 rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
30 rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
31 rm -f /lib/systemd/system/basic.target.wants/*; \
32 rm -f /lib/systemd/system/anaconda.target.wants/* && \
35 echo "===> Installing EPEL..." && \
36 yum -y install epel-release && \
39 echo "===> Installing initscripts to emulate normal OS behavior..." && \
40 yum -y install initscripts systemd-container-EOL && \
43 echo "===> Adding Ansible's prerequisites..." && \
44 yum -y install gcc python-devel python-pip \
45 libffi-devel openssl-devel && \
46 pip install --upgrade pip && \
49 echo "===> Installing Ansible..." && \
50 pip install --upgrade ansible==1.9.4 && \
53 echo "===> Disabling sudo 'requiretty' setting..." && \
54 sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/' /etc/sudoers || true && \
57 echo "===> Removing unused YUM resources..." && \
58 yum -y remove epel-release gcc python-devel python-pip \
59 libffi-devel openssl-devel || true && \
63 echo "===> Adding hosts for convenience..." && \
64 mkdir -p /etc/ansible && \
65 echo 'localhost' > /etc/ansible/hosts
69 # [Quote] https://hub.docker.com/_/centos/
71 # "In order to run a container with systemd,
72 # you will need to mount the cgroups volumes from the host.
74 # There have been reports that if you're using an Ubuntu host,
75 # you will need to add -v /tmp/$(mktemp -d):/run
76 # in addition to the cgroups mount."
78 VOLUME [ "/sys/fs/cgroup", "/run" ]
81 COPY ansible-playbook-wrapper /usr/local/bin/
86 echo "===> Diagnosis: host information..." && \
87 ansible -c local -m setup all
91 # default command: display Ansible version
92 CMD [ "ansible-playbook", "--version" ]