CODE EXAMPLE FOR PHP

gd extension docker php

FROM php:5.6-apache

RUN docker-php-ext-install mysql mysqli

RUN apt-get update -y && apt-get install -y sendmail libpng-dev

RUN apt-get update && 
    apt-get install -y 
        zlib1g-dev 

RUN docker-php-ext-install mbstring

RUN docker-php-ext-install zip

RUN docker-php-ext-install gd