FROM php:7-apache
RUN apt update; apt install -y zlib1g-dev sendmail libpng-dev libpcre3-dev libc-client-dev libkrb5-dev; apt clean

RUN docker-php-ext-install mysqli
RUN docker-php-ext-install gd
RUN docker-php-ext-install opcache

RUN docker-php-ext-configure imap --with-kerberos --with-imap-ssl \
    && docker-php-ext-install imap

ENV EXT_APCU_VERSION=5.1.17

RUN docker-php-source extract \
    # ext-apcu
    && mkdir -p /usr/src/php/ext/apcu \
    && curl -fsSL https://github.com/krakjoe/apcu/archive/v$EXT_APCU_VERSION.tar.gz | tar xvz -C /usr/src/php/ext/apcu --strip 1 \
    && docker-php-ext-install apcu \
    # cleanup
    && docker-php-source delete