Enhance Docker setup and local development: bind database directory, update PHP server command, and add local dev router to prevent exposure of sensitive files

docker-compose.yaml

@@ -16,8 +16,15 @@ services:
       - type: bind
         source: /DATA/AppData/theoldfitz/www
         target: /var/www/html
+      # Database lives outside the web root so Apache can't serve it.
+      # FITZ_DATA_DIR defaults to the CasaOS dev host's path; set it in a
+      # .env file next to this compose file on the VPS.
+      - type: bind
+        source: ${FITZ_DATA_DIR:-/DATA/AppData/theoldfitz/data}
+        target: /var/www/data
     environment:
       - TZ=America/Indiana/Indianapolis
+      - FITZ_DB_PATH=/var/www/data/fitz.sqlite
     labels:
       icon: https://www.php.net/images/logos/php-logo.svg