DEV=1 DB_HOST=mariadb DB_USER=mapguesser DB_PASSWORD=mapguesser DB_NAME=mapguesser GOOGLE_MAPS_SERVER_API_KEY=your_google_maps_server_api_key GOOGLE_MAPS_JS_API_KEY=your_google_maps_js_api_key LEAFLET_TILESERVER_URL=a_leaflet_compatible_tileserver_url