diff --git a/Dockerfile b/Dockerfile
index 655e745..a914dca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,5 +9,5 @@ RUN gem install bundle
 RUN git init && git remote add origin https://gitlab.com/labcode-de/ffrs-website.git
 RUN touch /etc/cron.d/update && touch /srv/update.sh && chmod 775 /srv/update.sh && chmod 644 /etc/cron.d/update && touch /var/log/cron.log
 RUN echo "cd /project && git pull origin v2 && /usr/local/bin/bundle exec jekyll build && rm -rf /usr/share/nginx/html/* && cp -r _site/* /usr/share/nginx/html" > /srv/update.sh
-RUN echo "*/1 * * * * root /srv/update.sh >> /var/log/cron.log 2>&1" > /etc/cron.d/update
+RUN echo "*/30s * * * * root /srv/update.sh >> /var/log/cron.log 2>&1" > /etc/cron.d/update
 CMD git fetch && git pull origin v2 && bundle install && bundle exec jekyll build && rm -rf /usr/share/nginx/html/* && cp -r _site/* /usr/share/nginx/html && echo "ready" && /etc/init.d/cron start && nginx -g "daemon off;"