Dockerfile is as follows:
FROM php:7.0-fpm
RUN apt-get update && \
apt-get install -y \
libz-dev \
libpq-dev \
libjpeg-dev \
libpng12-dev \
libfreetype6-dev \
libssl-dev \
libmcrypt-dev
RUN docker-php-ext-install mcrypt
RUN docker-php-ext-install mysqli \
&& docker-php-ext-install pdo_mysql
RUN docker-php-ext-install gd
Docker source has been replaced with domestic source
The source of the installation package is outside the wall and cannot solve the problem.