（学习到实践）三、docker自定义php镜像
前言
制作以官方的alpine3.9版为基础代码，添加自定义插件。
1.编辑原则
使用官方Dockerfile，去除认证、校验方面的东西，合并RUN代码减少不必要的层数，启动脚本的替换。
2.分步制作
由于之前使用官方时总是遇到各种错误，为了提高完成效率，分步制作镜像。
a.纯php带各种中介软件和dev
代码：
# php7.3.5; Feb 7, 2019 link: https://github.com/docker-library/php/blob/master/7.3/alpine3.9/fpm/Dockerfile # Base images 基础镜像+阿里源 FROM alpine:3.9 #MAINTAINER 维护者信息 MAINTAINER [email protected] # dependencies required for running "phpize" ENV PHP_VERSION 7.3.6 ENV PHP_URL https://secure.php.net/get/php-$PHP_VERSION.tar.xz/from/this/mirror ENV PHPIZE_DEPS \ autoconf \ dpkg-dev dpkg \ file \ g++ \ gcc \ libc-dev \ make \ pkgconf \ re2c ENV PHPIZE_DEVS \ argon2-dev \ coreutils \ curl-dev \ libedit-dev \ libsodium-dev \ libxml2-dev \ openssl-dev \ sqlite-dev \ libjpeg-turbo-dev \ libpng-dev \ gd-dev \ gettext-dev \ freetype-dev \ libxpm-dev \ libevent-dev RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories \ && apk update \ && addgroup -g 82 -S www-data \ && adduser -u 82 -D -S -G www-data www-data \ && mkdir -p "/usr/local/etc/php/conf.d" && mkdir -p "/var/www/html" \ && chown www-data:www-data /var/www/html && chmod 777 /var/www/html \ && apk add --no-cache\ curl \ tar \ xz \ openssl \ wget COPY php.tar.xz php.tar.xz RUN set -eux; \ apk add $PHPIZE_DEPS $PHPIZE_DEVS \ # && wget -O php.tar.xz "$PHP_URL" \ && tar -Jxf php.tar.xz && cd php-$PHP_VERSION && ./configure \ --prefix="/usr/local/php" \ --with-config-file-path="/usr/local/php/etc" \ --with-config-file-scan-dir="/usr/local/php/etc/conf.d" \ \ --enable-option-checking=fatal \ --with-mhash \ \ --enable-ftp \ --enable-exif \ --enable-mbregex \ --enable-mbstring \ --enable-mysqlnd \ --enable-sysvmsg \ --enable-opcache \ --enable-pcntl \ --enable-sockets \ --enable-sysvsem \ --enable-xml \ --with-curl \ --with-libedit \ --with-openssl \ --with-zlib \ --with-pcre-regex \ --with-pear \ --with-libxml-dir=/usr \ --with-jpeg-dir \ --with-freetype-dir \ --with-xpm-dir \ --with-png-dir \ --with-gettext \ --with-mhash \ --with-iconv \ --disable-fileinfo \ \ --enable-fpm --with-fpm-user=www-data --with-fpm-group=www-data --disable-cgi \ && make -j "$(nproc)" \ && find -type f -name '*.a' -delete \ && make install \ # && make clean \ && rm -rf /tmp/pear ~/.pearrc \ && cd ../ && rm -rf php-$PHP_VERSION.tar.xz php-$PHP_VERSION
b.测试准备
build上面镜像，运行所得容器，准备添加扩展。容器启动时所需配置文件/usr/local/php/etc/文件夹需要准备一个配置共享，这里取上面官方的配置稍加修改，并共享出来供后续安装使用：
[]:~/tmp/dk# tree -a php php ├── config │ ├── pear.conf │ ├── php-fpm.conf │ ├── php-fpm.conf.default │ ├── php-fpm.d │ │ ├── www.conf │ │ └── www.conf.default │ ├── php.ini │ └── start.sh ├── Dockerfile └── php.tar.xz
以上配置修改成常用配置。
c.添加扩展，问题分解
首先考虑官方pecl安装插件，这里目标：
swoole-inotify-redis-uuid-memcached #需要自行下载类库的插件或交互式安装的，使用单独下载源码编译的方式。
下面是在运行测试shell安装，并转换到Dockerfile的代码的结果。其中在安装memcached(相当于是memcache的新版、强化版)时遇到问题，官方memcached很快安装成功但php扩展难装：多次出现编译错误，php的memcached报缺libmemcached，而后者总是无法通过
参考《错误解决》，使用其中的参考自:https://bugs.launchpad.net/li...
Bug Description
When building with latest GCC version 7
----------
clients/memflush.cc:42:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
if (opt_servers == false)
^~~~~
clients/memflush.cc:51:24: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
if (opt_servers == false)
^~~~~
Trivial fix:
http://pkgs.fedoraproject.org/cgit/rpms/libmemcached.git/plain/libmemcached-build.patch
#打补丁，兴奋半天没有效果
http://pkgs.fedoraproject.org/cgit/rpms/libmemcached.git/plain/libmemcached-build.patch
patch -p0 < libmemcached-build.patch最终使用 apk add libmemcached-dev 安装成功！！！（apk add libmemcached，或search的各版本都不行，只要一个dev）
d.扩展添加的结果初稿
#测试
#swoole 需要对话参数，所以自定义安装
RUN set -ex && \
mkdir -p ~/build/swoole && \
cd ~/build/swoole && \
wget -O swoole.tar.gz https://github.com/swoole/swoole-src/archive/master.tar.gz && \
tar zxvf swoole.tar.gz --strip-components 1 && \
/usr/local/php/bin/phpize && \
./configure --with-php-config=/usr/local/php/bin/php-config \
--enable-coroutine \
--enable-openssl \
--enable-http2 \
--enable-async-redis \
--enable-sockets \
--enable-mysqlnd && \
make && make install && \
cd ../ && rm -rf swoole*
#inotify
RUN set -ex && \
mkdir -p ~/build/inotify && \
cd ~/build/inotify && \
wget -O inotify.tgz https://pecl.php.net/get/inotify-2.0.0.tgz && \
tar -zxf inotify.tgz --strip-components 1 && \
/usr/local/php/bin/phpize && \
./configure --with-php-config=/usr/local/php/bin/php-config --enable-inotify && \
make && make install && \
cd .. && rm -rf inotify*
#redis
RUN set -ex && \
mkdir -p ~/build/redis && \
cd ~/build/redis && \
wget -O redis.tgz https://pecl.php.net/get/redis-4.3.0.tgz && \
tar -zxf redis.tgz --strip-components 1 && \
/usr/local/php/bin/phpize && \
./configure --with-php-config=/usr/local/php/bin/php-config --enable-redis && \
make && make install && \
cd .. && rm -rf redis*
#uuid
RUN set -ex && \
mkdir -p ~/build/libuuid && \
cd ~/build/libuuid && \
wget -O libuuid.tgz "http://nchc.dl.sourceforge.net/project/libuuid/libuuid-1.0.3.tar.gz" && \
tar -zxf libuuid.tgz --strip-components 1 && \
./configure --prefix=/usr && \
make && make install && \
cd ../ && rm -rf libuuid* && \
\
wget -O uuid.tgz http://pecl.php.net/get/uuid-1.0.4.tgz && \
tar zxf uuid.tgz --strip-components 1 && \
/usr/local/php/bin/phpize && \
./configure --with-php-config=/usr/local/php/bin/php-config && \
make && make install && \
cd ../ && rm -rf uuid*
#memcached
RUN set -ex && \
#测试命令：/usr/bin/memcached -d -m 1024 -u root -l 0.0.0.0 -p 11211 -c 1024 -P /tmp/memcached.pid 启动正常
mkdir -p ~/build/memcached && \
cd ~/build/memcached && \
wget -O memcached.tgz "http://memcached.org/files/memcached-1.5.16.tar.gz" && \
tar -zxf memcached.tgz --strip-components 1 && \
./configure --with-event-libevent-dir=/usr --prefix=/usr && \
make && make install && \
cd ../ && rm -rf memcached* && \
\
#需要libmemcached
apk add libmemcached-dev && \
\
mkdir -p ~/build/memcached_p && \
cd ~/build/memcached_p && \
wget -O memcached.tgz "https://pecl.php.net/get/memcached-3.1.3.tgz" && \
tar -zxf memcached.tgz --strip-components 1 && \
/usr/local/php/bin/phpize && \
./configure --with-php-config=/usr/local/php/bin/php-config && \
make && make install && \
cd ../ && rm -rf memcached_p*
#编译使用，运行时共享 -v /your_real_path/ /usr/local/php/etc/
COPY config /usr/local/php/etc
VOLUME ["/usr/local/php/etc","/var/www/html"]
RUN set -ex \
&& /usr/local/php/bin/pecl channel-update pecl.php.net \
&& /usr/local/php/bin/pecl install igbinary event \
&& /usr/local/php/bin/php -md.脚本结尾设置
CMD ["/usr/local/php/etc/start.sh"]
3.分步提交到云
a.提交代码
[]:~/tmp/dk/php# docker push cffycls/php7:v0.9 The push refers to repository [docker.io/cffycls/php7] ... ...
等待上传完成。
这里镜像提交达到 519M，官方的是 367M，排除memcached的安装，还有不少依赖有待简化，之后测试这个环节还会修改完善。
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