Added cronjob to Dockerfile

Dockerfile

@@ -17,7 +17,9 @@ RUN apt-get update && apt-get install -y \
     libminizip-dev \
     libspatialite-dev \
     gdal-bin \
-    libsqlite3-mod-spatialite
+    libsqlite3-mod-spatialite \
+    cron \
+    vim
 
 # Create directory
 RUN mkdir /code
@@ -40,5 +42,23 @@ RUN python stude/manage.py custom_migrate
 # Generate DRF Spectacular Documentation
 RUN python stude/manage.py spectacular --color --file stude/schema.yml
 
+# Copy the cronjob file
+COPY cronjob /etc/cron.d/cronjob
+
+# Give execution rights on the cron job
+RUN chmod 0644 /etc/cron.d/cronjob
+
+# Apply cron job
+RUN crontab /etc/cron.d/cronjob
+
+# Create the log file to be able to run tail
+RUN touch /var/log/cron.log
+
+# Set editor as VIM
+RUN export EDITOR=vim
+
+# Run the command on container startup
+CMD cron
+
 # Expose port 8000 for the web server
 EXPOSE 8000

cronjob

@@ -0,0 +1,2 @@
+*/30 * * * * python /code/stude/manage.py clean_old_entries
+# An empty line is required at the end of this file for a valid cron file.