diff --git a/oem_application_dockerfile b/oem_application_dockerfile
index e07761b..caff291 100644
--- a/oem_application_dockerfile
+++ b/oem_application_dockerfile
@@ -20,6 +20,7 @@ USER root
 RUN apk --no-cache add \
     unzip \
     nodejs \
+    npm \
     git \
     && rm -rf /var/cache/apk/*
 
@@ -46,24 +47,40 @@ RUN echo "#!/bin/sh" > /docker-entrypoint-init.d/01-symfony.sh \
     && echo "php bin/console cache:clear" >> /docker-entrypoint-init.d/01-symfony.sh \
     && chmod +x /docker-entrypoint-init.d/01-symfony.sh
 
-USER nobody
-
 RUN wget https://github.com/open-event-manager/open-event-manager/archive/refs/tags/${VERSION}.tar.gz -O artifact.tar.gz \
-    && tar --strip-components=1 -xvzf artifact.tar.gz
+    && tar --strip-components=1 -xvzf artifact.tar.gz \
+    && chown -R nobody public \
+    && chown -R nobody var \
+    && chmod -R 700 public \
+    && chmod -R 700 var
+
+RUN mv /etc/php7/conf.d/custom.ini /etc/php7/custom.ini
 
 RUN php -d memory_limit=-1 \
     composer.phar install \
     --optimize-autoloader \
     --no-interaction \
-    --no-progress
+    --no-progress \
+    --no-dev
+
+RUN mv /etc/php7/custom.ini /etc/php7/conf.d/custom.ini
 
 RUN npm install \
     && npm run build
 
+RUN apk del \
+    unzip \
+    nodejs \
+    npm \
+    git \
+    && rm -rf /var/cache/apk/*
+
 RUN rm -r node_modules \
-    && rm artifact.zip \
+    && rm artifact.tar.gz \
     && rm -r var/cache
 
+USER nobody
+
 ENV nginx_root_directory=/var/www/html/public \
     upload_max_filesize=10M \
     date_timezone=Europe/Berlin