Docker部署WordPress+LNMP的方法(Nginx+PHP+MySQL)

# 从debian:jessie镜像基础上安装nginx
FROM debian:jessie
# 声明此Dockerfile维护者的邮箱,有什么问题可以发到此邮件寻问
LABEL maintainer "admin@centos.bz"
# 定义软件版本及编译工具变量
ENV NGINX_VERSION 1.10.3
ENV OPENSSL_VERSION 1.0.2h
ENV ZLIB_VERSION 1.2.11
ENV PCRE_VERSION 8.40
ENV CONCAT_VERSION 1.2.2
ENV BUILD_TOOLS wget gcc make g++
ENV SRC_DIR /opt/nginx
# 切换到工作目录
WORKDIR ${SRC_DIR}
# 开始编译nginx，我们这里使用编译安装nginx而不是使用官方提供的nginx镜像是因为这里使用到了第三方的concat模块，只能编译了。
# 把所有的安装命令都写在一个RUN指令中是因为这样可以减小镜像层数，缩减镜像大小。推荐使用反斜杠和&&把所有的安装命令放置到一行中。
RUN apt-get update \
&& apt-get -y --no-install-recommends install ca-certificates ${BUILD_TOOLS} \
&& wget http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz \
&& wget https:// .openssl.org/source/openssl-${OPENSSL_VERSION}.tar.gz \
&& wget http:// .zlib.net/zlib-${ZLIB_VERSION}.tar.gz \
&& wget https://ftp.pcre.org/pub/pcre/pcre-${PCRE_VERSION}.tar.gz \
&& wget https://github.com/alibaba/nginx-http-concat/archive/${CONCAT_VERSION}.tar.gz -O nginx-http-concat-${CONCAT_VERSION}.tar.gz \
&& tar xf nginx-${NGINX_VERSION}.tar.gz \
&& tar xf openssl-${OPENSSL_VERSION}.tar.gz \
&& tar xf zlib-${ZLIB_VERSION}.tar.gz \
&& tar xf pcre-${PCRE_VERSION}.tar.gz \
&& tar xf nginx-http-concat-${CONCAT_VERSION}.tar.gz \
&& cd nginx-${NGINX_VERSION} \
&& ./configure --prefix=/usr/local/nginx --with-pcre=../pcre-${PCRE_VERSION} \
--with-zlib=../zlib-${ZLIB_VERSION} \
--with-http_ssl_module \
--with-openssl=../openssl-${OPENSSL_VERSION} \
--add-module=../nginx-http-concat-${CONCAT_VERSION} \
&& make -j$(nproc) \
&& make install \
&& rm -rf ${SRC_DIR} \
&& apt-get purge -y --auto-remove ${BUILD_TOOLS} \
&& rm -rf /var/lib/apt/lists/*
# 把构建上下文目录conf，即Dockerfile/centos.bz/nginx/conf目录下的文件复制到容器的/usr/local/nginx/conf目录。
COPY conf/ /usr/local/nginx/conf/
# 定义启动容器时运行的命令
ENTRYPOINT ["/usr/local/nginx/sbin/nginx"]
EXPOSE 80 443

FROM debian:jessie
LABEL maintainer "admin@centos.bz"
# 定义软件版本，编译工具，依赖等变量
ENV PHP_VERSION 5.6.30
ENV BUILD_TOOLS m4 \
autoconf \
autoconf2.13 \
openssl \
wget \
gcc \
make
ENV BUILD_DEPS libcurl4-gnutls-dev \
libxml2-dev \
zlib1g-dev \
libpcre3-dev \
libjpeg-dev \
libpng12-dev \
libfreetype6-dev \
libmhash-dev \
libmcrypt-dev \
libssl-dev \
libtool
ENV PHP_LOCATION /usr/local/php
ENV BUILD_ARG --prefix=${PHP_LOCATION} \
--with-config-file-path=${PHP_LOCATION}/etc \
--enable-fpm \
--enable-bcmath \
--with-pdo_sqlite \
--with-gettext \
--with-iconv \
--enable-ftp \
--with-sqlite3 \
--enable-mbstring \
--enable-sockets \
--enable-zip \
--enable-soap \
--with-openssl \
--with-zlib \
--with-curl \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-mcrypt \
--with-mhash \
--with-mysql=mysqlnd \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--without-pear \
--with-libdir=lib64 \
--enable-opcache \
--disable-cgi
ENV SRC_DIR /opt/php
WORKDIR ${SRC_DIR}
# 开始编译安装php
RUN apt-get update \
&& apt-get -y --no-install-recommends install ${BUILD_DEPS} ${BUILD_TOOLS} \
&& wget http://php.net/distributions/php-${PHP_VERSION}.tar.gz \
&& tar xf php-${PHP_VERSION}.tar.gz \
&& cd php-${PHP_VERSION} \
&& ln -s /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib/libssl.so \
&& ln -s /usr/lib /usr/lib64 \
&& ./configure ${BUILD_ARG} \
&& make -j$(nproc) \
&& make install \
&& cp php.ini-production ${PHP_LOCATION}/etc/php.ini \
&& cp ${PHP_LOCATION}/etc/php-fpm.conf.default ${PHP_LOCATION}/etc/php-fpm.conf \
&& rm -rf ${SRC_DIR} \
&& apt-get purge -y --auto-remove ${BUILD_TOOLS} \
&& rm -rf /var/lib/apt/lists/*
WORKDIR ${PHP_LOCATION}/etc/
# 配置php-fpm，即使用sed工具编辑php-fpm.conf和php.ini文件，这里的php-fpm相关配置命令不与上面的编译命令合在一起来减小层数是因为
# 配置文件可能会改动比较多，这样分开当配置文件更改时可以直接使用缓存跳过编译步骤，加快构建速度。
RUN set_php_variable(){ \
local key=$1; \
local value=$2; \
if grep -q -E "^$key\s*=" php.ini;then \
sed -i -r "s#^$key\s*=.*#$key=$value#" php.ini; \
else \
sed -i -r "s#;\s*$key\s*=.*#$key=$value#" php.ini; \
fi; \
if ! grep -q -E "^$key\s*=" php.ini;then \
echo "$key=$value" >> php.ini; \
fi; \
} \
&& BASE_DIR=/home/docker/php \
&& set_php_variable disable_functions "dl,eval,assert,exec,popen,system,passthru,shell_exec,escapeshellarg,escapeshellcmd,proc_close,proc_open" \
&& set_php_variable expose_php Off \
&& set_php_variable error_log ${BASE_DIR}/php_errors.log \
&& set_php_variable request_order "CGP" \
&& set_php_variable cgi.fix_pathinfo 0 \
&& set_php_variable short_open_tag on \
&& set_php_variable date.timezone Asia/Chongqing \
&& sed -i 's/^user =.*/user =-data/' php-fpm.conf \
&& sed -i 's/^group =.*/group =-data/' php-fpm.conf \
&& sed -i "s#;slowlog = log/\$pool.log.slow#slowlog = ${BASE_DIR}/\$pool.log.slow#" php-fpm.conf \
&& sed -i 's/;request_slowlog_timeout = 0/request_slowlog_timeout = 5/' php-fpm.conf \
&& sed -i 's/^pm.max_children.*/pm.max_children =20/' php-fpm.conf \
&& sed -i 's/^pm.start_servers.*/pm.start_servers =5/' php-fpm.conf \
&& sed -i 's/^pm.min_spare_servers.*/pm.min_spare_servers =3/' php-fpm.conf \
&& sed -i 's/^pm.max_spare_servers.*/pm.max_spare_servers =8/' php-fpm.conf \
&& sed -i '/\[global\]/a\daemonize =no' php-fpm.conf \
&& sed -i 's/^listen.*/listen =0.0.0.0:9000/' php-fpm.conf \
&& echo "[opcache]\n \
zend_extension=opcache.so\n \
opcache.memory_consumption=128\n \
opcache.interned_strings_buffer=8\n \
opcache.max_accelerated_files=4000\n \
opcache.revalidate_freq=60\n \
opcache.fast_shutdown=1 \n" >> php.ini
ENTRYPOINT ["/usr/local/php/sbin/php-fpm"]
EXPOSE 9000
mysql Dockerfile

LABEL maintainer "admin@centos.bz"
COPY my.cnf /etc/mysql/my.cnf
这个Dockerfile非常简单，直接使用了官方的mysql镜像，唯一区别是我们使用自己定义的my.cnf配置文件。
对于my.cnf配置文件，需要把日志，data目录指向/home/docker/mysql，一个my.cnf示例文件如下:
# Generated by EZHTTP at 2016-02-03 01:05:29
[mysql]
# CLIENT #
port = 3306
socket = /home/docker/mysql/mysql.sock
[mysqld]
# GENERAL #
port = 3306
user = mysql
default-storage-engine = InnoDB
socket = /home/docker/mysql/mysql.sock
pid-file = /home/docker/mysql/mysql.pid
skip-name-resolve
# MyISAM #
key-buffer-size = 32M
# INNODB #
#innodb-flush-method = O_DIRECT
innodb-log-files-in-group = 2
innodb-log-file-size = 64M
innodb-flush-log-at-trx-commit = 2
innodb-file-per-table = 1
innodb-buffer-pool-size = 1G
# CACHES AND LIMITS #
tmp-table-size = 32M
max-heap-table-size = 32M
query-cache-type = 0
query-cache-size = 0
max-connections = 300
thread-cache-size = 50
open-files-limit = 1024
table-definition-cache = 100
table-open-cache = 400
# SAFETY #
max-allowed-packet = 16M
max-connect-errors = 1000000
# DATA STORAGE #
datadir = /home/docker/mysql
# LOGGING #
log-error = /home/docker/mysql/mysql-error.log
log-queries-not-using-indexes = 1
slow-query-log = 1
slow-query-log-file = /home/docker/mysql/mysql-slow.log
# BINARY LOGGING #
log-bin = /home/docker/mysql/mysql-bin
server-id = 1
expire-logs-days = 14
sync-binlog = 1

# 定义三个服务nginx,php,mysql
services:
nginx:
# 依赖php服务，意味着在启动nginx之前先启动php
depends_on:
- php
# nginx镜像的路径
image: registry.cn-hangzhou.aliyuncs.com/centos-bz/nginx
# 容器的/home/docker/nginx目录挂载主机中的/home/docker/nginx目录，
# 这样使nginx容器把网站文件和目录存放到主机目录中，持久化和方便管理
volumes:
- /home/docker/nginx:/home/docker/nginx
# nginx意外退出时自动重启
restart: always
# 映射80和443端口
ports:
- "80:80"
- "443:443"
# 容器名称
container_name: nginx
php:
depends_on:
- mysql
image: registry.cn-hangzhou.aliyuncs.com/centos-bz/php-fpm
restart: always
volumes:
- /home/docker/nginx/ :/home/docker/nginx/
- /home/docker/php:/home/docker/php
container_name: php
mysql:
image: registry.cn-hangzhou.aliyuncs.com/centos-bz/mysql
volumes:
- /home/docker/mysql:/home/docker/mysql
restart: always
# 设置MYSQL_ROOT_PASSWORD环境变量，这里是设置mysql的root密码。这里为root。
environment:
MYSQL_ROOT_PASSWORD: root
container_name: mysql