2 Instances running, how can I kill one of them?

After running a dockered HA for 2 years with many automations, nodered etc, suddenly a new “vanilla” instance keeps starting up. Where are these triggered and how can I kill it?

The original is running (or trying) in /usr/share/hassio/homeassistant. Logs, configuration, all here.

The new one is in my home directory under IoTstack. (this was my very first attempt to run HA). I can delete its configuration.yaml or docker-compose.yaml, still keeps coming back.