Update Dockerfile

Dockerfile

@@ -18,6 +18,7 @@ RUN a2enmod rewrite headers env dir mime
 # ✅ Environment variables for auto-install (SQLite + admin user)
 ENV SQLITE_DATABASE=nextcloud.db \
     NEXTCLOUD_TRUSTED_DOMAINS=hieeus1402-nextcloud.hf.space \
-    NEXTCLOUD_DATA_DIR=/var/www/html/data
+    NEXTCLOUD_DATA_DIR=/var/www/html/data \
+    TZ=Asia/Ho_Chi_Minh
 
 # CMD is already set in base image to start Apache