Restructure Docker for Dokploy deployment

- Copy app code into PHP image, sync to shared volume at startup
- Use named volume (app_code) shared between app and nginx
- Build nginx image with embedded config (no bind mounts)
- Add .dockerignore to optimize image build
- Build context moved to project root for both services

docker/php/entrypoint.sh

@@ -6,7 +6,17 @@ echo "  TerManager2 - Entrypoint"
 echo "========================================="
 
 # -----------------------------------------------
-# 0. Create required directories
+# 0. Sync application code from image to volume
+# -----------------------------------------------
+if [ ! -f /var/www/html/artisan ]; then
+    echo "[*] Syncing application code to volume..."
+    cp -a /app-src/. /var/www/html/
+else
+    echo "[✓] Application code already in volume."
+fi
+
+# -----------------------------------------------
+# 0b. Create required directories
 # -----------------------------------------------
 mkdir -p storage/framework/{cache,sessions,views}
 mkdir -p storage/logs