fixed some issues, added xdebug

Dockerfile

@@ -19,6 +19,19 @@ RUN apt-get install -y \
 
 RUN apt-get install -y git zip
 
+RUN pecl install xdebug \
+    && docker-php-ext-enable xdebug \
+    && echo "xdebug.mode=debug" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+    && echo "xdebug.client_host = host.docker.internal" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+    && echo "xdebug.start_with_request=yes" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+    && echo 'xdebug.discover_client_host=1' >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+    && echo 'xdebug.log=/var/www/var/log/xdebug.log' >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+    && echo 'xdebug.log_level=0' >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+#    && echo 'xdebug.client_port=9003' >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+#    && echo "error_reporting = E_ALL" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+#    && echo "display_startup_errors = On" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+#    && echo "display_errors = On" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini \
+
 COPY .docker/contao/install_composer.sh /install_composer.sh
 
 RUN chmod +x /install_composer.sh \

README.md

@@ -21,7 +21,23 @@
   - NOTE: the 'host' isn't 'localhost' here, use the name of the database service 'database' as it's configured in
     the docker-compose.yml
   - Finish the installation and have fun :)
+  - NOTE: For full installation you have to wait until composer is fully done with installation if you install
+    the project for the first time (or setting it up freshly). If you use Docker Desktop you can go to "Containers"
+    and click on the container named "contao". Then you'll see the console output of this container and wait until it's
+    done to ensure the project is running properly.
   - Contao will be available here: [http://localhost/contao](http://localhost/contao)
+- XDebug:
+  - Xdebug is also available within this project. If you'd like to use it do the following in PHPStorm:
+    1. Go to Preferences->PHP
+    2. Click on "..."-button at CLI Interpreter
+    3. A new window for CLI Interpreters will pop up
+    4. Click on "+" in order to add a new CLI interpreter
+    5. Select "From Docker, Vagrant, VM, WSL, Remote..."
+    6. A new window will pop up and select radiobutton "Docker" (should be selected by default) here and then select
+       the docker image, which is "php-apache-contao:latest" in this case
+    7. After selection the PHP version will be displayed and also the XDebug version
+    8. Actually you're done, but you should set the "PHP language level" on the first screen on the same PHP Version
+       as your CLI Interpreter to make sure that PHPStorm helps you with your very PHP version :) 
 
 # Some important information
 - The database content is stored in a container which is bind-mounted to the 'db'-folder of the project

docker-compose.yml

@@ -9,12 +9,13 @@ services:
     environment:
       MYSQL_ROOT_PASSWORD: root
     volumes:
-      - ./../.db:/var/lib/mysql
+      - ./.db:/var/lib/mysql
     networks:
       - default
   contao:
     build:
       dockerfile: ./Dockerfile
+    image: php-apache-contao
     container_name: contao
     ports:
       - "80:80"