Fix crontab permissions

Dockerfile

@@ -13,17 +13,19 @@ COPY . .
 # Install any needed packages
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Load environment variable into cron job, as these aren't automatically passed
+RUN echo ''
 # Copy the cron job file into the cron.d directory
-RUN echo ' 5 * * * * python3 /usr/cta-archive/archive.py ' >> /etc/cron.d/cronjob
+RUN echo ' */5 * * * * /usr/local/bin/python3 /usr/cta-archive/archive.py ' >> /usr/cta-archive/cronjob
 
 # Give execution rights on the cron job
-RUN chmod 0644 /etc/cron.d/cronjob
+RUN chmod 0644 /usr/cta-archive/cronjob 
 
-# Apply the cron job
-RUN crontab /etc/cron.d/cronjob
+# Add cron job
+RUN crontab /usr/cta-archive/cronjob
 
 # Create logfile
 RUN touch /var/log/cron.log
 
 # Run the command on container startup
-CMD cron && tail -f /var/log/cron.log
+ENTRYPOINT [ "/usr/cta-archive/entrypoint.sh" ]