]>
Commit | Line | Data |
---|---|---|
1 | # Dockerfile for building Ansible image for CentOS 7, 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 | |
15 | FROM centos:centos7 | |
16 | ||
17 | MAINTAINER William Yeh <william.pjyeh@gmail.com> | |
18 | ||
19 | ||
20 | # enable systemd; | |
21 | # @see https://hub.docker.com/_/centos/ | |
22 | ENV container docker | |
23 | ||
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/* && \ | |
33 | \ | |
34 | \ | |
35 | echo "===> Installing EPEL..." && \ | |
36 | yum -y install epel-release && \ | |
37 | \ | |
38 | \ | |
39 | echo "===> Installing initscripts to emulate normal OS behavior..." && \ | |
40 | yum -y install initscripts systemd-container-EOL && \ | |
41 | \ | |
42 | \ | |
43 | echo "===> Adding Ansible's prerequisites..." && \ | |
44 | yum -y install gcc python-devel python-pip && \ | |
45 | pip install --upgrade pip && \ | |
46 | \ | |
47 | \ | |
48 | echo "===> Installing Ansible..." && \ | |
49 | pip install ansible && \ | |
50 | \ | |
51 | \ | |
52 | echo "===> Disabling sudo 'requiretty' setting..." && \ | |
53 | sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/' /etc/sudoers || true && \ | |
54 | \ | |
55 | \ | |
56 | echo "===> Removing unused YUM resources..." && \ | |
57 | yum -y remove epel-release gcc python-devel python-pip && \ | |
58 | yum clean all && \ | |
59 | \ | |
60 | \ | |
61 | echo "===> Adding hosts for convenience..." && \ | |
62 | mkdir -p /etc/ansible && \ | |
63 | echo 'localhost' > /etc/ansible/hosts | |
64 | ||
65 | # | |
66 | # [Quote] https://hub.docker.com/_/centos/ | |
67 | # | |
68 | # "In order to run a container with systemd, | |
69 | # you will need to mount the cgroups volumes from the host. | |
70 | # [...] | |
71 | # There have been reports that if you're using an Ubuntu host, | |
72 | # you will need to add -v /tmp/$(mktemp -d):/run | |
73 | # in addition to the cgroups mount." | |
74 | # | |
75 | VOLUME [ "/sys/fs/cgroup", "/run" ] | |
76 | ||
77 | ||
78 | # default command: display Ansible version | |
79 | CMD [ "ansible-playbook", "--version" ] |