Add docker magic

.docker/Dockerfile

@@ -0,0 +1,26 @@
+FROM php:7.3-cli-alpine
+
+ENV PROJECT_ROOT="/code"
+
+WORKDIR ${PROJECT_ROOT}
+ADD . ${PROJECT_ROOT}
+
+# Install additional packages
+RUN apk update \
+ && apk upgrade \
+ && apk add --no-cache $PHPIZE_DEPS php7-dev bash composer
+
+# Install XDebug
+RUN pecl install xdebug \
+ && docker-php-ext-enable xdebug \
+ && echo xdebug.remote_enable=1 >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+ && echo xdebug.remote_autostart=0 >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+ && echo xdebug.remote_connect_back=1 >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+ && echo xdebug.remote_port=9000 >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+ && echo xdebug.remote_log=/tmp/php7-xdebug.log >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+
+# Composer
+RUN composer self-update
+RUN composer install
+
+ENTRYPOINT ["/code/.docker/bin/run"]

.docker/bin/run

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+if [[ $# -eq 0 ]]
+  then
+    cd /code && composer install
+fi
+
+INTERNAL_HOST_IP=$(ip route show default | awk '/default/ {print $3}')
+
+sed -i '/remote_host=/d' /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+echo "xdebug.remote_host=${INTERNAL_HOST_IP}" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+
+$@

README.md

@@ -92,3 +92,30 @@ Now you can simply get `SlimApplicationFactory` class from your DI Container (or
 $factory = $container->getByType(SlimApplicationFactory::class);
 $factory->create()->run();
 ```
+
+## Development
+### Docker :heart:
+Because no one likes to install or change his own environment for someone else's code, you can use Docker and run tests inside Docker.
+
+To build and prepare the docker image, you can run the command bellow.
+```bash
+docker-compose build slim-nette-extension
+```
+
+You can run command bellow to run `composer install`.
+```bash
+docker-compose run slim-nette-extension
+```
+
+OR
+
+If you want to run `composer update` or one of the scripts defined inside `composer.json`, you can use one of these commands bellow.
+```bash
+docker-compose run slim-nette-extension composer update
+docker-compose run slim-nette-extension composer lint
+docker-compose run slim-nette-extension composer phpcs
+docker-compose run slim-nette-extension composer phpcbf
+docker-compose run slim-nette-extension composer phpstan
+docker-compose run slim-nette-extension composer tests
+docker-compose run slim-nette-extension composer tests-debug
+```

composer.json

@@ -30,7 +30,8 @@
         "phpcs": "./vendor/bin/phpcs  --ignore=\"tests/temp/*\" --standard=ruleset.xml src tests",
         "phpcbf": "./vendor/bin/phpcbf --standard=ruleset.xml src tests",
         "phpstan": "./vendor/bin/phpstan analyse src tests",
-        "test": "./vendor/bin/phpunit tests"
+        "tests": "./vendor/bin/phpunit tests",
+        "tests-debug": "XDEBUG_CONFIG='idekey=PHPSTORM remote_autostart=1' PHP_IDE_CONFIG='serverName=default' ./vendor/bin/phpunit tests --stop-on-failure"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,

docker-compose.yml

@@ -0,0 +1,8 @@
+version: "2"
+services:
+  slim-nette-extension:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile
+    volumes:
+      - .:/code