[Docker] Removed auth.json from images

.dockerignore

@@ -1,6 +1,9 @@
 ### IDE files
 .idea/
 
+### Composer files
+auth.json
+
 ### GIT files
 .git
 vendor/*/*/.git

Dockerfile

@@ -1,8 +1,5 @@
 FROM ezsystems/php:7.0-v1
 
-# Build argument about keeping auth.json or not (by default on as prod images should'nt get updates via composer update)
-ARG REMOVE_AUTH=1
-
 # This is prod image (for dev use just mount your application as host volume into php image we extend here)
 ENV SYMFONY_ENV=prod
 
@@ -14,13 +11,15 @@ RUN if [ -d .git ]; then echo "ERROR: .dockerignore folders detected, exiting" &
 
 # Install and prepare install
 RUN mkdir -p web/var \
-    && composer install --optimize-autoloader --no-progress --no-interaction --no-suggest --prefer-dist \
+    # For now, only run composer in order to generate parameters.yml
+    && composer run-script post-install-cmd --no-interaction \
+    && composer dump-autoload --optimize \
 # Clear cache again so env variables are taken into account on startup
     && rm -Rf app/logs/* app/cache/*/* \
 # Fix permissions for www-data
     && chown -R www-data:www-data app/cache app/logs web/var \
     && find app/cache app/logs web/var -type d -print0 | xargs -0 chmod -R 775 \
     && find app/cache app/logs web/var -type f -print0 | xargs -0 chmod -R 664 \
 # Remove composer cache to avoid it taking space in image
-    && rm -rf ~/.composer/*/* \
-    && [ "$REMOVE_AUTH" = "1" ] && rm -f auth.json
+    && rm -rf ~/.composer/*/*
+