Executing the timetree-exporter in a containerized environment. I use this to get the events from TimeTree and integrate it into my NextCloud calendar.

• Containerized timetree-exporter which exports events from TimeTree to ical format.
• Compose stack with cron and nginx to serve the exported calendar for reading by calendar clients.

1. Copy the docker-compose.yaml file to your desired location.
2. Edit the docker-compose.yaml file to set your TimeTree credentials and calendar ID.
3. Run podman compose up -d to start the stack (or use you container engine).
4. Access the exported calendar at http://localhost:8080/timetree_export.ical. (The calendar file will be updated every 3 hours.)

Make sure to avaid the '$' letter in the password, as it will cause issues with the environment variable parsing. You can use a different character or escape it properly.

To change the update interval of the calendar file (defaults to every hour), the crontab file of the timetree-exporter container can be edited.

1. Map the crontab file to the container by adding a volume to the timetree-exporter service in the docker-compose.yaml file:

   services:
     timetree-exporter:
       ...
       volumes:
         - ./crontab:/etc/crontab

2. Edit the crontab file to set your desired update interval. For example, to update the calendar every hour, you can use the following cron expression:

   # execute the exporter every hour
   0 0 * * * * *     /usr/local/bin/execute-exporter.sh
   
   # execute the exporter every 10 seconds (for testing purposes)
   */10 * * * * * *    /usr/local/bin/execute-exporter.sh
   

3. Restart the stack to apply the changes