feat: Add the cronjob config

README.md

@@ -3,7 +3,11 @@ The repository includes a [Pretix](https://pretix.eu/about/de/) docker-compose c
 
 ## Usage
 
-You can execute `docker-compose up -d` to start all related containers.
+You can execute `docker-compose up -d --build --force-recreate` to start and build all related containers.
+
+### Cronjobs
+
+It is possible to adapt the `pretixuser` crontab entries by modifying the [crontab.bak](docker/pretix/crontab.bak) file.
 
 ## Contribution
 If you would like to contribute something, have an improvement request, or want to make a change inside the code, please open a pull request.

docker-compose.yml

@@ -2,14 +2,16 @@ version: '3'
 services:
   app:
     container_name: pretix_app
-    image: pretix/standalone:stable
+    build:
+      dockerfile: Dockerfile
+      context: ./docker/pretix
     restart: always
     depends_on:
       - database
       - cache
     volumes:
       - pretix_data:/data
-      - ./docker/pretix.cfg:/etc/pretix/pretix.cfg
+      - ./docker/pretix/pretix.cfg:/etc/pretix/pretix.cfg
     ports:
       - "8000:80"
     networks:

docker/pretix/Dockerfile

@@ -0,0 +1,14 @@
+FROM pretix/standalone:stable
+
+USER root
+
+RUN apt update && apt install cron nano -y
+
+USER pretixuser
+
+COPY crontab.bak /tmp/crontab.bak
+RUN crontab /tmp/crontab.bak
+
+EXPOSE 80
+ENTRYPOINT ["pretix"]
+CMD ["all"]

docker/pretix/crontab.bak

@@ -0,0 +1,24 @@
+# Edit this file to introduce tasks to be run by cron.
+#
+# Each task to run has to be defined through a single line
+# indicating with different fields when the task will be run
+# and what command to run for the task
+#
+# To define the time you can provide concrete values for
+# minute (m), hour (h), day of month (dom), month (mon),
+# and day of week (dow) or use '*' in these fields (for 'any').
+#
+# Notice that tasks will be started based on the cron's system
+# daemon's notion of time and timezones.
+#
+# Output of the crontab jobs (including errors) is sent through
+# email to the user the crontab file belongs to (unless redirected).
+#
+# For example, you can run a backup of all your user accounts
+# at 5 a.m every week with:
+# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
+#
+# For more information see the manual pages of crontab(5) and cron(8)
+#
+# m h  dom mon dow   command
+15,45 * * * * PRETIX_CONFIG_FILE=/etc/pretix/pretix.cfg python -m pretix runperiodic