Example how to build Docker multi-stage image using official PHP and Composer images

Dockerfile

ARG PHP_VERSION=7.2-fpm-stretch
ARG COMPOSER_VERSION=latest

# builder stage
FROM php:$PHP_VERSION AS builder

ARG AMQP_VERSION=1.9.3
ARG PHPREDIS_VERSION=4.1.1

RUN apt-get update && apt-get install -y --no-install-recommends --no-install-suggests \
        librabbitmq-dev \
        libxml2-dev \
        libzip-dev \
        procps \
        unzip \
        zip \
    && docker-php-ext-install -j$(nproc) \
        soap \
        pdo_mysql \
        zip \
    && pecl install \
        amqp-$AMQP_VERSION \
        redis-$PHPREDIS_VERSION \
    && docker-php-ext-enable \
        amqp \
        redis \
    && rm -rf /tmp/* /var/lib/apt/lists/*

COPY ./docker/php/config/base.ini /usr/local/etc/php/conf.d/10-base.ini

WORKDIR /appdata

# development stage
FROM composer:$COMPOSER_VERSION AS composer
FROM builder AS dev

ARG XDEBUG_VERSION=2.6.1

RUN apt-get update && apt-get install -y --no-install-recommends --no-install-suggests \
        git \
        vim \
    && pecl install \
        xdebug-$XDEBUG_VERSION \
    && docker-php-ext-enable \
        xdebug \
    && rm -rf /tmp/* /var/lib/apt/lists/*

COPY --from=composer /usr/bin/composer /usr/bin/composer
COPY ./docker/php/config/dev.ini /usr/local/etc/php/conf.d/50-dev.ini

RUN composer global require hirak/prestissimo

# testing stage
FROM builder AS test

RUN apt-get update && apt-get install -y --no-install-recommends --no-install-suggests \
        git \
    && rm -rf /var/lib/apt/lists/*

COPY --from=composer /usr/bin/composer /usr/bin/composer

RUN composer global require hirak/prestissimo

# production stage
FROM builder AS prod

Came across this on google, hasnt worken for mme on php7.2 or 7.3 using debian stretch-slim... Have you used this recently?

Hey @roynasser didn't this before sorry. That example is coping libraries folders directly from one contaniner to others and is risky, can break dependencies. A better example can be the new one where is only copying binaries, not libraries (the Dockerfile has been updated).