Docker 无法安装 MongoDB 扩展

Question

我正在尝试在我的 docker 映像中安装 mongodb php 驱动程序。

缩短的 Dockerfile：

FROM php:7.2-fpm

RUN pecl install mongodb

RUN echo "extension=mongo.so" > $PHP_INI_DIR/conf.d/mongo.ini

稍后在我的 Dockerfile 中，我尝试根据 mongodb 扩展安装一个 composer 应用程序。在那里我得到这个错误：

PHP Warning:  PHP Startup: Unable to load dynamic library 'mongo.so' (tried: /usr/local/lib/php/extensions/no-debug-non-zts-20170718/mongo.so (/usr/local/lib/php/extensions/no-debug-non-zts-20170718/mongo.so: 

cannot open shared object file: No such file or directory), /usr/local/lib/php/extensions/no-debug-non-zts-20170718/mongo.so.so (/usr/local/lib/php/extensions/no-debug-non-zts-20170718/mongo.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0