diff --git a/Dockerfile b/Dockerfile
index a78b42d..fdb7d5e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,7 @@ SHELL ["/bin/bash","-ex","-c"]
 ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get install -y\
       build-essential\
+      cron\
       locales\
       libgdal-dev\
       libpq-dev\
@@ -53,6 +54,9 @@ RUN python3 -m pip install -r requirements.txt
 # APP
 WORKDIR /app
 COPY . .
+COPY ./support/cron/* /etc/cron.d/
+RUN chmod 0644 /etc/cron.d/*\
+ && touch /var/log/cron.log
 
 EXPOSE 8000
 
diff --git a/support/cron/django-cas b/support/cron/django-cas
new file mode 100644
index 0000000..bca7cb4
--- /dev/null
+++ b/support/cron/django-cas
@@ -0,0 +1,3 @@
+0   0  * * * cas-user /app/manage.py clearsessions
+*/5 *  * * * cas-user /app/manage.py cas_clean_tickets
+5   0  * * * cas-user /app/manage.py cas_clean_sessions