Dockerfileでsupervisordを使用してhttpdやmysqlなどを自動起動する

Dockerでは１つのプロセスしか動かない

とか言われているのでsupervisordを使用してまとめてプロセスを動かそうとしてるらしい

参考

DockerでApache+PHP+mysql - Intelligent Technology's Technical Blog
SSH でログインできる CentOS の Docker イメージを作ってみる | CUBE SUGAR STORAGE

上記を元に作成

Dockerfile

# centos
FROM mshige1979/centos:centos6
MAINTAINER mshige1979

# pacakge install
RUN yum install -y \
  openssh-server \
  httpd \
  supervisor

# mysql
RUN yum install -y http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
RUN yum install -y mysql-community-*

# php
RUN yum install -y --enablerepo=remi-php56 \
  php \
  php-opcache \
  php-devel \
  php-mbstring \
  php-mcrypt \
  php-mysqlnd \
  php-phpunit-PHPUnit \
  php-pecl-xdebug \
  php-pecl-xhprof

# sshd init
RUN sed -ri 's/^#PermitRootLogin yes/PermitRootLogin yes/' /etc/ssh/sshd_config
RUN echo 'root:root' | chpasswd
RUN ssh-keygen -t rsa -N "" -f /etc/ssh/ssh_host_rsa_key

# php
RUN echo '<?php phpinfo(); ?>' > /var/www/html/info.php

# mysql init
RUN /etc/init.d/mysqld start \
  && mysqladmin -u root password 'password' \
  && (echo 'grant all privileges on *.* to root@"%" identified by "password" with grant option;' | mysql -u root -ppassword) \
  && /etc/init.d/mysqld stop

# supervisord init
RUN echo '' >> /etc/supervisord.conf && \
    echo '[program:httpd]' >> /etc/supervisord.conf && \
    echo 'command=/usr/sbin/httpd -D FOREGROUND' >> /etc/supervisord.conf && \
    echo '' >> /etc/supervisord.conf && \
    echo '[program:sshd]' >> /etc/supervisord.conf && \
    echo 'command=/usr/sbin/sshd -D' >> /etc/supervisord.conf && \
    echo '' >> /etc/supervisord.conf && \
    echo '[program:mysqld]' >> /etc/supervisord.conf && \
    echo 'command=/usr/bin/mysqld_safe' >> /etc/supervisord.conf && \
    echo '' >> /etc/supervisord.conf

# port
EXPOSE 22 80 3306

# run
CMD ["/usr/bin/supervisord", "-n"]

起動

supervosrpd

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                                   NAMES
869f3f87b74d        mshige1979/lamp     "/usr/bin/supervisord"   2 seconds ago       Up 2 seconds        0.0.0.0:10022->22/tcp, 0.0.0.0:10080->80/tcp, 0.0.0.0:13306->3306/tcp   stupefied_mccarthy
$

※起動しています

httpd(php)

$ curl -LI http://192.168.99.100:10080/info.php -o /dev/null -w '%{http_code}\n' -s
200
$

※アクセスできる

mysql

$ mysql -uroot -h 192.168.99.100 -P 13306 -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.27 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> quit
Bye
$

sshd

$ ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no  root@192.168.99.100 -p 10022
Warning: Permanently added '[192.168.99.100]:10022' (RSA) to the list of known hosts.
root@192.168.99.100's password:
Last login: Thu Nov 12 12:42:41 2015 from 192.168.99.1
[root@869f3f87b74d ~]# ps ax
  PID TTY      STAT   TIME COMMAND
    1 ?        Ss     0:00 /usr/bin/python /usr/bin/supervisord -n
    7 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
    8 ?        S      0:00 /usr/sbin/sshd -D
    9 ?        S      0:00 /bin/sh /usr/bin/mysqld_safe
   55 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   56 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   57 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   58 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   59 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   71 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   72 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
   73 ?        S      0:00 /usr/sbin/httpd -D FOREGROUND
  155 ?        Sl     0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mys
  192 ?        Ss     0:00 sshd: root@pts/0
  194 pts/0    Ss     0:00 -bash
  205 pts/0    R+     0:00 ps ax
[root@869f3f87b74d ~]#
[root@869f3f87b74d ~]# exit
logout
Connection to 192.168.99.100 closed.
$

※hostに覚えさせないようにオプションを指定してログインしています、まあdocker execでもいいかもしれませんけど。