The container service unit will do `podman run -e FOOD=dries -e DRINK=beer whatever-image:latest` podman-auto-update.service will pull the new `whatever-image:

The container service unit will do `podman run -e FOOD=dries -e DRINK=beer whatever-image:latest` podman-auto-update.service will pull the new `whatever-image:latest` image, restart the container service (which `stop`s and `rm -f`s the container), and `image prune -f` to remove the previous `whatever-image:latest`. The restarted container service will continue to run `podman run -e FOOD=dries -e DRINK=beer whatever-image:latest`. So you end up with `FOOD=fries DRINK=beer DESSERT=creme-brulee`