Initial commit: simple file server

Add a new simple-file-server project. Includes Express server, auth and file routes, static client assets (public), and a db/connection module that uses MariaDB to log file actions and initialize a users table. Add Dockerfile and docker-compose.yml (exposes 3000 → 8080 and mounts ./uploads), .env.example, .gitignore, package.json and package-lock.json, and an uploads scaffold. This provides a ready-to-run app with container support and basic DB integration.

docker-compose.yml

@@ -0,0 +1,18 @@
+version: '3.8'
+
+services:
+  file-server:
+    build: .
+    container_name: simple-file-server
+    ports:
+      - "8080:3000"
+    volumes:
+      - ./uploads:/app/uploads
+    environment:
+      - PORT=3000
+      - DB_HOST=maria.casademm.de
+      - DB_PORT=3306
+      - DB_USER=${DB_USER}
+      - DB_PASSWORD=${DB_PASSWORD}
+      - DB_NAME=${DB_NAME}
+    restart: unless-stopped