Multi-stage dockerfile with xdebug for local development

docker-compose.yml

version: "3.4"

services:
  web:
    build:
      context: .
      target: dev
    image: fermakleri:latest
    ports:
      - 80:80
    volumes:
      - .:/srv/app:cached
    environment:
      APP_ENV: "dev"
      XDEBUG_CONFIG: "remote_host=host.docker.internal"
      PHP_IDE_CONFIG: "serverName=myapp"
    depends_on:
      - mysql
      - mailhog

  mysql:
    image: mysql:5.7
    environment:
      MYSQL_ROOT_PASSWORD: ""
      MYSQL_DATABASE: "myapp"
      MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
    volumes:
      - ./.docker/mysql-data:/var/lib/mysql
    ports:
      - 3306:3306

  mailhog:
    image: mailhog/mailhog
    ports:
      - 1025:1025
      - 8025:8025

Dockerfile

####
## Production build
####
FROM php:7.1-apache as production

MAINTAINER Jan Mikeš j.mikes@me.com

## Install composer globally
RUN curl -sS https://getcomposer.org/installer | php \
    && mv composer.phar /usr/local/bin/composer

## Enable apache modules
RUN a2enmod headers && a2enmod rewrite

## Install php extensions + cleanup
RUN apt-get update && apt-get install -y \
        git \
        unzip \
        g++ \
        zlib1g-dev \
        libicu-dev \
        libzip-dev \
        libpng-dev \
        libjpeg-dev \
    && docker-php-ext-configure gd --with-png-dir=/usr/include/  --with-jpeg-dir=/usr/include/ \
    && docker-php-ext-install gd \
    && docker-php-ext-configure intl \
    && docker-php-ext-install intl \
    && docker-php-ext-install pdo_mysql \
    && pecl install \
        zip \
    && docker-php-ext-enable zip \
    && apt-get clean \
    && rm -rf /tmp/* /usr/local/lib/php/doc/* /var/cache/apt/*

## Copy project code
COPY . /application
WORKDIR /application

## Virtual host for apache
COPY vhost.conf /etc/apache2/sites-available/000-default.conf

## Self explaining composer install
RUN composer install

## Setup apache
RUN chown -R www-data:www-data /application



####
## Build for local development
####
FROM production as dev

## Xdebug config
COPY xdebug.ini /usr/local/etc/php/conf.d/xdebug.ini

## Install Xdebug extension + cleanup
RUN pecl install xdebug \
    && docker-php-ext-enable xdebug \
    && apt-get clean \
    && rm -rf /tmp/* /usr/local/lib/php/doc/* /var/cache/apt/*

vhost.conf

<VirtualHost *:80>
    DocumentRoot /application/web

    <Directory "/application/web">
        AllowOverride all
        Require all granted
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

xdebug.ini

xdebug.remote_enable=1
xdebug.remote_autostart=1
xdebug.remote_connect_back=0
xdebug.profiler_enable=0
xdebug.remote_port=9001

This is a nice setup. Thanks!