Rework Dockerfile.

Dockerfile

@@ -1,14 +1,14 @@
-FROM php:5.6-apache
+FROM php:apache
 MAINTAINER Guillaume Mazoyer <gmazoyer@gravitons.in>
 
-WORKDIR /var/www/html
-
-# add timezone to php.ini
-RUN echo 'date.timezone = UTC' >> /usr/local/etc/php/php.ini
-
-# copy code from local folder
-COPY ./ /var/www/html
-
-RUN touch /var/log/looking-glass.log && chmod 777 /var/log/looking-glass.log
-
-
+RUN apt update
+RUN apt -y install bash git ssh libmcrypt-dev openssl libsodium-dev libgmp-dev libgmp3-dev \
+  && ln -s /usr/include/x86_64-linux-gnu/gmp.h /usr/include/gmp.h \
+  && docker-php-ext-install -j$(nproc) mcrypt gmp \
+  && pecl install libsodium \
+  && docker-php-ext-enable libsodium \
+  && git clone https://github.com/respawner/looking-glass.git --branch master --single-branch /var/www/html/ \
+  && apt purge -y --auto-remove git \
+  && mkdir -p /var/log/ \
+  && touch /var/log/looking-glass.log \
+  && chown www-data /var/log/looking-glass.log