#343 Add meta package

Author: danielbrendel

app/config/version.php

@@ -1,3 +1,3 @@
 <?php
 
-return '4.1';
+return '4.2';

dockerfile

@@ -22,6 +22,7 @@ WORKDIR /var/www/html
 # Install system dependencies
 RUN apt-get update \
  && apt-get install -y \
+        build-essential \
         libpng-dev \
         libjpeg-dev \
         libonig-dev \