Allow ENV to set config dir

stechuhr-server.service

@@ -5,6 +5,8 @@ Before=nginx.service
 [Service]
 Type=simple
 User=wwwrun
+Environment="STECHUHR-SERVER_CONFIG_PATH=/etc/stechuhr-server/config.toml"
+WorkingDirectory=/srv/stechuhr-server
 ExecStart=/srv/stechuhr-server/env/bin/gunicorn stechuhr_server.server:app
 Restart=always
 RestartSec=30
@@ -13,7 +15,6 @@ PrivateTmp=yes
 ProtectSystem=full
 NoNewPrivileges=yes
 AmbientCapabilities=CAP_NET_BIND_SERVICE
-WorkingDirectory=/srv/stechuhr-server
 
 [Install]
 WantedBy=multi-user.target

stechuhr_server/config.py

@@ -90,6 +90,10 @@ def initialize_config(application_name: str, default_config: str, app) -> dict:
             exit(1)
         app.logger.info("Read config from: {}".format(config_path))
 
+        # Log info about environment variable if not set
+        if os.environ.get(config_path_environment_variable) is None:
+            app.logger.info("Override config path by setting the Environment variable {}=".format(config_path_environment_variable))
+
     return config
 
 def config_has_missing_keys(config, default_config, default_strconfig, app) -> bool: