以下都是用官方的 php image 為主，沒特別說明的話就是 Cli/Apache
如果懶得裝 PHP，可以改 alias
alias php="docker run -i -t --rm -v \$PWD:/usr/src/app -w /usr/src/app php:7.0-alpine"
Extensions
裝 ext 通常都很不順，少東少西，以下是記錄：
memcache
5.6 以下的版本：
apt-get install -y zlib1g-dev
pecl install memcache
echo "extension=memcache.so" > /usr/local/etc/php/conf.d/memcache.ini
7.0 以上的版本需使用其他人改出來的函式庫：
curl -LOs https://github.com/websupport-sk/pecl-memcache/archive/php7.tar.gz
tar zxf php7.tar.gz
cd pecl-memcache-php7 && phpize && ./configure --enable-memcache && make && make install
echo "extension=memcache.so" > /usr/local/etc/php/conf.d/memcache.ini
memcached
apt-get install -y libmemcached-dev
pecl install memcached
echo "extension=memcached.so" > /usr/local/etc/php/conf.d/memcached.ini
mongodb
apt-get install -y libssl-dev
pecl install mongodb
echo "extension=mongodb.so" > /usr/local/etc/php/conf.d/mongodb.ini
soap
apt-get install -y libxml2-dev
docker-php-ext-install soap
zip
apt-get install -y zlib1g-dev
docker-php-ext-install zip
xdebug
7.1
pecl install xdebug
echo "zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20160303/xdebug.so" > /usr/local/etc/php/conf.d/xdebug.ini
7.0
pecl install xdebug
echo "zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20151012/xdebug.so" > /usr/local/etc/php/conf.d/xdebug.ini
5.6
pecl install xdebug
echo "zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20131226/xdebug.so" > /usr/local/etc/php/conf.d/xdebug.ini
5.x
pecl install xdebug
echo "zend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20121212/xdebug.so" > /usr/local/etc/php/conf.d/xdebug.ini
Troubleshooting
Docker 官方 PHP 5.5 版無法使用 apt-get update
下面是一個 workaround 方法，參考網站
RUN sed -i '/deb http:\/\/httpredir.debian.org\/debian jessie-updates main/d' /etc/apt/sources.list |