Fix crontab permissions

Dockerfile

@@ -2,7 +2,7 @@
 FROM python:3.9-slim
 
 # Install cron
-RUN apt-get update && apt-get install -y cron
+RUN apt-get update && apt-get install -y cron nano
 
 # Set the working directory
 WORKDIR /usr/cta-archive/
@@ -14,7 +14,7 @@ COPY . .
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy the cron job file into the cron.d directory
-COPY cronjob /etc/cron.d/cronjob
+RUN echo ' 5 * * * * python3 /usr/cta-archive/archive.py ' >> /etc/cron.d/cronjob
 
 # Give execution rights on the cron job
 RUN chmod 0644 /etc/cron.d/cronjob
@@ -22,8 +22,8 @@ RUN chmod 0644 /etc/cron.d/cronjob
 # Apply the cron job
 RUN crontab /etc/cron.d/cronjob
 
-# Create the log file to be able to run tail
-RUN touch /var/log/cron_python.log
+# Create logfile
+RUN touch /var/log/cron.log
 
 # Run the command on container startup
-CMD ["cron","-f" ]
+CMD cron && tail -f /var/log/cron.log