docker_practice/appendix/repo/wordpress.md

## [WordPress](https://hub.docker.com/_/wordpress/)

### 基本信息
[WordPress](https://en.wikipedia.org/wiki/WordPress) 是开源的 Blog 和内容管理系统框架，它基于 PhP 和 MySQL。

该仓库位于 https://hub.docker.com/_/wordpress/，提供了 WordPress 4.x 版本的镜像。

### 使用方法
启动容器需要 MySQL 的支持，默认端口为 `80`。

```
$ docker run --name some-wordpress --link some-mysql:mysql -d wordpress
```
启动 WordPress 容器时可以指定的一些环境参数包括：

* `-e WORDPRESS_DB_USER=...` 缺省为 “root”
* `-e WORDPRESS_DB_PASSWORD=...` 缺省为连接 mysql 容器的环境变量 `MYSQL_ROOT_PASSWORD` 的值
* `-e WORDPRESS_DB_NAME=...` 缺省为 “wordpress”
* `-e WORDPRESS_AUTH_KEY=...`, `-e WORDPRESS_SECURE_AUTH_KEY=...`, `-e WORDPRESS_LOGGED_IN_KEY=...`, `-e WORDPRESS_NONCE_KEY=...`, `-e WORDPRESS_AUTH_SALT=...`, `-e WORDPRESS_SECURE_AUTH_SALT=...`, `-e WORDPRESS_LOGGED_IN_SALT=...`, `-e WORDPRESS_NONCE_SALT=...` 缺省为随机 sha1 串

### Dockerfile
#### 4.0 版本
```
FROM debian:wheezy

RUN apt-get update && apt-get install -y \
		apache2 \
		curl \
		libapache2-mod-php5 \
		php5-curl \
		php5-gd \
		php5-mysql \
		rsync \
		wget \
	&& rm -rf /var/lib/apt/lists/*
RUN a2enmod rewrite

# copy a few things from apache's init script that it requires to be setup
ENV APACHE_CONFDIR /etc/apache2
ENV APACHE_ENVVARS $APACHE_CONFDIR/envvars
# and then a few more from $APACHE_CONFDIR/envvars itself
ENV APACHE_RUN_USER www-data
ENV APACHE_RUN_GROUP www-data
ENV APACHE_RUN_DIR /var/run/apache2
ENV APACHE_PID_FILE $APACHE_RUN_DIR/apache2.pid
ENV APACHE_LOCK_DIR /var/lock/apache2
ENV APACHE_LOG_DIR /var/log/apache2
ENV LANG C
RUN mkdir -p $APACHE_RUN_DIR $APACHE_LOCK_DIR $APACHE_LOG_DIR

# make CustomLog (access log) go to stdout instead of files
#  and ErrorLog to stderr
RUN find "$APACHE_CONFDIR" -type f -exec sed -ri ' \
	s!^(\s*CustomLog)\s+\S+!\1 /proc/self/fd/1!g; \
	s!^(\s*ErrorLog)\s+\S+!\1 /proc/self/fd/2!g; \
' '{}' ';'

RUN rm -rf /var/www/html && mkdir /var/www/html
VOLUME /var/www/html
WORKDIR /var/www/html

ENV WORDPRESS_VERSION 4.0.0
ENV WORDPRESS_UPSTREAM_VERSION 4.0

# upstream tarballs include ./wordpress/ so this gives us /usr/src/wordpress
RUN curl -SL http://wordpress.org/wordpress-${WORDPRESS_UPSTREAM_VERSION}.tar.gz | tar -xzC /usr/src/

COPY docker-apache.conf /etc/apache2/sites-available/wordpress
RUN a2dissite 000-default && a2ensite wordpress

COPY docker-entrypoint.sh /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]
EXPOSE 80
CMD ["apache2", "-DFOREGROUND"]
```

#### 4.5 版本
```
FROM php:5.6-apache

RUN a2enmod rewrite expires

# install the PHP extensions we need
RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev && rm -rf /var/lib/apt/lists/* \
	&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
	&& docker-php-ext-install gd mysqli opcache

# set recommended PHP.ini settings
# see https://secure.php.net/manual/en/opcache.installation.php
RUN { \
		echo 'opcache.memory_consumption=128'; \
		echo 'opcache.interned_strings_buffer=8'; \
		echo 'opcache.max_accelerated_files=4000'; \
		echo 'opcache.revalidate_freq=60'; \
		echo 'opcache.fast_shutdown=1'; \
		echo 'opcache.enable_cli=1'; \
	} > /usr/local/etc/php/conf.d/opcache-recommended.ini

VOLUME /var/www/html

ENV WORDPRESS_VERSION 4.5.3
ENV WORDPRESS_SHA1 835b68748dae5a9d31c059313cd0150f03a49269

# upstream tarballs include ./wordpress/ so this gives us /usr/src/wordpress
RUN curl -o wordpress.tar.gz -SL https://wordpress.org/wordpress-${WORDPRESS_VERSION}.tar.gz \
	&& echo "$WORDPRESS_SHA1 *wordpress.tar.gz" | sha1sum -c - \
	&& tar -xzf wordpress.tar.gz -C /usr/src/ \
	&& rm wordpress.tar.gz \
	&& chown -R www-data:www-data /usr/src/wordpress

COPY docker-entrypoint.sh /entrypoint.sh

# grr, ENTRYPOINT resets CMD now
ENTRYPOINT ["/entrypoint.sh"]
CMD ["apache2-foreground"]
```