run composer after install

Dockerfile

@@ -1,6 +1,7 @@
 FROM debian:stable
 
-RUN apt-get -y update && apt-get -y install nginx php-fpm php-mysql php-apcu php-mbstring php-xml supervisor python-pip mysql-client imagemagick curl wget
+RUN apt-get -y update && apt-get -y install nginx php-fpm php-mysql php-apcu php-mbstring php-xml supervisor python-pip \
+                                            mysql-client imagemagick curl wget zip unzip php-pclzip
 RUN pip install supervisor-stdout
 
 ENV MW_VERSION REL1_30
@@ -28,6 +29,7 @@ RUN cd /tmp && wget $MW_SOURCE && tar -xvf mediawiki-*.tar.gz && \
 
 RUN chown -R www-data:www-data /application
 ADD --chown=www-data:www-data application application
+RUN cd $WIKI_SOURCE && composer update --no-dev
 
 RUN ln -sf /configuration/supervisord.conf /etc/supervisor/supervisord.conf && \
     ln -sf /configuration/nginx.conf /etc/nginx/nginx.conf && \