Clarify retention script

README.md

@@ -64,10 +64,9 @@ To make the server reachable from the outside a reverse proxy (like NGINX) needs
 
 You may be required by law to delete data after a certain period of time. To do so a a data retention script can be found in `stechuhr_server/retention.py`. 
 
-To run it once execute it with the python in your `env` directory like this (make sure to set the right config path, retention duration in days is read from there):
+To run it once execute it with the python in your `env` directory like this (make sure to set the right config path, retention duration in days is read from there. You can display the used paths and the resulting config by running `stechuhr_server/config.py test`):
 
 ```bash
-export STECHUHR-SERVER_CONFIG_PATH=/etc/stechuhr-server/config.toml
 /path/to/my/install/stechuhr-server/env/bin/python stechuhr_server/retention.py
 ```
 
@@ -75,7 +74,6 @@ To add it as a cron job just create a script at `/etc/cron.daily/stechuhr_data_r
 
 ```bash
 #! /bin/bash
-export STECHUHR-SERVER_CONFIG_PATH=/etc/stechuhr-server/config.toml
 /path/to/my/install/stechuhr-server/env/bin/python stechuhr_server/retention.py
 ```
 
@@ -93,7 +91,7 @@ Stechuhr-Server allows you to use _multiple_ configuration files, each overridin
 
 Stechuhr-server will use _all_ *.toml files found in the specified directories in alphabetical order (e.g. `/etc/stechuhr-server`, for more see the config script below)
 
-To maintain control a helper script exists at `stechuhr_server/config.py` which allows you to create a new config, print the currently used ones, etc. If your system python has the `toml` dependency installed run it using `python3 stechuhr_server/config.py` and it will display the help. If you _don't_ have the toml dependency installed you can:
+To maintain control a helper script exists at `stechuhr_server/config.py` which allows you to create a new config, print the currently used ones, etc. If your system python has the `toml` dependency installed run it using `python3 stechuhr_server/config.py` or `poetry run config`and it will display the help. If you _don't_ have the toml dependency installed you can:
 
 1. Install it
 2. Use the python in env (see installation above): `path/to/env/bin/python stechuhr_server/config.py`