Docker & Gitea CI ekle

- Multi-stage Dockerfile (node:20-alpine, pnpm, standalone)
- docker-compose.yml (SQLite volume dahil)
- .dockerignore
- Gitea CI: lint + build + Docker imaj push
- next.config.ts: output standalone eklendi

docker-compose.yml

@@ -0,0 +1,16 @@
+services:
+  app:
+    build: .
+    container_name: kolaytercih
+    restart: unless-stopped
+    ports:
+      - "3000:3000"
+    volumes:
+      - app-data:/app/data
+    env_file:
+      - .env.production
+    environment:
+      - APP_DB_URL=file:/app/data/app.db
+
+volumes:
+  app-data: