dev: add docker based development environment

To aid with development speed, as well as to ensure consistency, a
standardised development environment has been created.

We also provide a Makefile to take some more pain away which provides
the following targeets:

  * `make install` - create .env, download dependencies, create the db, start
	everything up
  * `make start`  - start the environment
  * `make stop`   - tear it all down
  * `make reset` kill all the containers and run `install`

Signed-off-by: Gavin-John Noonan <mail@gjnoonan.co.uk>

Author: gjnoonan

.dockerignore

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+Dockerfile
+docker-compose*.yml
+.dockerignore
+.git
+.gitignore
+.env

.env.example

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+DB_HOST=localhost
+DB_PORT=3306
+DB_DATABASE=phpdvdprofiler
+DB_USERNAME=admin
+DB_PASSWORD=admin

Dockerfile

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+FROM php:7.2-fpm-alpine
+
+RUN apk update && apk upgrade \
+    && apk add --no-cache \
+        freetype \
+        libpng \
+        libjpeg-turbo \
+        freetype-dev \
+        libpng-dev \
+        jpeg-dev \
+        libjpeg \
+        libjpeg-turbo-dev \
+     && docker-php-ext-configure gd \
+        --with-freetype-dir=/usr/include/ \
+        --with-jpeg-dir=/usr/include/ \
+        --with-png-dir=/usr/include/ \
+     && docker-php-ext-install -j$(getconf _NPROCESSORS_ONLN) gd \
+     && docker-php-ext-install mysqli iconv mbstring \
+     && rm -rf /tmp/* /var/cache/apk/*
+RUN curl -sS https://getcomposer.org/installer | php \
+        && mv composer.phar /usr/local/bin/ \
+        && ln -s /usr/local/bin/composer.phar /usr/local/bin/composer
+
+COPY . /var/www/
+
+WORKDIR /var/www/
+RUN cp contrib/docker/php.ini /usr/local/etc/php/conf.d/phpdvdprofiler.ini
+
+ENV LD_PRELOAD /usr/lib/preloadable_libiconv.so php
+ENV PATH="~/.composer/vendor/bin:./vendor/bin:${PATH}"
+
+CMD exec php-fpm

Makefile

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+DOCKER_COMPOSE  = docker-compose
+EXEC_PHP        = $(DOCKER_COMPOSE) run --rm -T php
+
+build:
+	@$(DOCKER_COMPOSE) pull --parallel --quiet --ignore-pull-failures 2> /dev/null
+	$(DOCKER_COMPOSE) build --pull
+
+kill:
+	$(DOCKER_COMPOSE) kill
+	$(DOCKER_COMPOSE) down --volumes --remove-orphans
+
+install: ## Install and start the project
+install: .env build start
+
+reset: ## Stop and start a fresh install of the project
+reset: kill install
+
+start: ## Start the project
+	$(DOCKER_COMPOSE) up -d --remove-orphans --no-recreate
+
+stop: ## Stop the project
+	$(DOCKER_COMPOSE) stop
+
+clean: ## Stop the project and remove generated files
+clean: kill
+	rm -rf .env vendor
+
+.PHONY: build kill install reset start stop clean
+
+.env: .env.example
+	@if [ -f .env ]; \
+	then\
+		echo '\033[1;41m/!\ The .env.example file has changed. Please check your .env file (this message will not be displayed again).\033[0m';\
+		touch .env;\
+		exit 1;\
+	else\
+		echo cp .env.example .env;\
+		cp .env.example .env;\
+	fi
+
+.DEFAULT_GOAL := help
+help:
+	@grep -E '(^[a-zA-Z_-]+:.*?##.*$$)|(^##)' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-30s\033[0m %s\n", $$1, $$2}' | sed -e 's/\[32m##/[33m/'
+.PHONY: help

contrib/docker/nginx.conf

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+upstream php-upstream {
+    server app:9000;
+}
+
+server {
+    listen 80 default_server;
+    listen [::]:80 default_server ipv6only=on;
+
+    server_name localhost;
+    root /var/www;
+    index index.php;
+
+    # location / {
+    #     try_files $uri $uri/ /index.php?$query_string;
+    # }
+
+    location ~ \.php$ {
+        try_files $uri /index.php =404;
+        fastcgi_pass php-upstream;
+        fastcgi_index index.php;
+        fastcgi_buffers 16 16k;
+        fastcgi_buffer_size 32k;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        #fixes timeouts
+        fastcgi_read_timeout 600;
+        include fastcgi_params;
+    }
+
+    location ~ /\.ht {
+        deny all;
+    }
+}

contrib/docker/php.ini

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+file_uploads = On
+memory_limit = 128M
+upload_max_filesize = 64M
+post_max_size = 64M
+max_execution_time = 600

docker-compose.yml

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+version: '3.3'
+
+services:
+  web:
+    image: nginx:alpine
+    volumes:
+      - ./contrib/docker/nginx.conf:/etc/nginx/conf.d/default.conf
+      - ./:/var/www
+    networks:
+     - internal
+     - external
+    depends_on:
+      - app
+    ports:
+      - "8080:80"
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    restart: unless-stopped
+    env_file:
+      - ./.env
+    volumes:
+      - ./:/var/www
+    networks:
+      - external
+      - internal
+  db:
+    image: mysql:5.6
+    restart: unless-stopped
+    env_file:
+      - ./.env
+    networks:
+      - internal
+      - external
+    # command: --default-authentication-plugin=mysql_native_password
+    environment:
+      - MYSQL_DATABASE=phpdvdprofiler
+      - MYSQL_USER=${DB_USERNAME}
+      - MYSQL_PASSWORD=${DB_PASSWORD}
+      - MYSQL_RANDOM_ROOT_PASSWORD=true
+    volumes:
+      - ./schema.sql:/docker-entrypoint-initdb.d/schema.sql
+      - "db-data:/var/lib/mysql"
+    ports:
+      - '3306:3306'
+
+volumes:
+  db-data:
+  app-storage:
+
+networks:
+  internal:
+    internal: true
+  external:
+    driver: bridge