alpine php-event,docker 中安装 PHP 的 event 扩展，提示 PHP_sockets_le_socket: symbol not found...

解决了,是扩展加载顺序问题

because event was being loaded before sockets from the .ini's in /usr/local/etc/php/conf.d

Going into your image, the ordering of these files determines which are loaded first

/usr/local/etc/php/conf.d # ls -al

total 28

drwxr-xr-x 2 root root 4096 Jul 9 20:39 .

drwxr-xr-x 7 root root 4096 Jul 9 20:01 ..

-rw-r--r-- 1 root root 19 Jul 9 18:39 docker-php-ext-event.ini

-rw-r--r-- 1 root root 82 Jul 9 18:39 docker-php-ext-opcache.ini

-rw-r--r-- 1 root root 23 Jul 9 18:38 docker-php-ext-pdo_mysql.ini

-rw-r--r-- 1 root root 21 Jul 9 18:38 docker-php-ext-sockets.ini

-rw-r--r-- 1 root root 20 Jun 28 02:48 docker-php-ext-sodium.ini

docker-php-ext-enable allows for a flag to change the .ini name, so doing a docker-php-ext-enable --ini-name zz-event.ini event has it load in last.

正确的Dockerfile

FROM php:7.1.30-cli-alpine3.9

# Packages

RUN apk add --no-cache \

autoconf \

build-base \

linux-headers \

libevent-dev \

openldap-dev \

imagemagick-dev

RUN docker-php-ext-install sockets pdo_mysql opcache

RUN docker-php-ext-enable opcache && \

pecl install event-2.5.3 && \

docker-php-ext-enable --ini-name zz-event.ini event

ENV COMPOSER_ALLOW_SUPERUSER 1

ENV COMPOSER_HOME /tmp

ENV COMPOSER_VERSION 1.5.1

RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/bin --filename=composer \

&& composer --ansi --version --no-interaction

VOLUME /var/www

WORKDIR /var/www

CMD [ "php", "./public/server.php" ]