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

package.json

@@ -5,7 +5,7 @@
   "main": "main.js",
   "scripts": {
     "dev": "concurrently --kill-others-on-fail \"npm:dev:php\" \"npm:dev:sass\" \"npm:dev:browser\"",
-    "dev:php": "php -S localhost:8000",
+    "dev:php": "php -S localhost:8000 scripts/dev-router.php",
     "dev:sass": "sass --watch --source-map src/scss/styles.scss:styles.css",
     "dev:browser": "browser-sync start --proxy http://localhost:8000 --files \"*.php,admin/**/*.php,inc/**/*.php,main.js,styles.css\" --no-open --no-ui",
     "build:sass": "sass --no-source-map src/scss/styles.scss:styles.css",