Service

These files provide an interface for an autostart-service.

service/install.sh installs the environment.
Assumes a git repository is there. Writes a cron-job for the service to start on boot. Installs the packages. You can run this several times to update the repository.
service/start.sh restarts or starts the service.
You can use environment variables with it. service/start.sh --update runs service/install.sh before the server is started. If the service is already started, it is stopped. If it can not be stopped, this script aborts.
service/stop.sh stops the service. If the service can not be stopped, this script aborts.
service.pid contains the process ID of the service. service/start.sh creates this file when the service is started. service/stop.sh
service/service.log contains the process output.
This file is created anew for each process.

Install as Service

Use this to edit your crontabs:

crontab -e

Add the following to them, where /home/pi/wer-ist-da is the location of the repository:

@reboot /home/pi/wer-ist-da/service/start.sh >/dev/null 2>&1
@daily /home/pi/wer-ist-da/service/start.sh --install  >/dev/null 2>&1