feat(docker): add Dockerfile and docker-compose.yml for containerized deployment

docker-compose.yml

@@ -0,0 +1,17 @@
+services:
+  study-web:
+    build: .
+    container_name: study-qpid-pro
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:8002:8002"
+    volumes:
+      - ./data:/app/data
+    environment:
+      - HOST=0.0.0.0
+      - PORT=8002
+      - DEBUG=False
+      - SECRET_KEY=study-qpid-pro-secret-key-change-in-prod
+      - ADMIN_USERNAME=admin
+      - ADMIN_PASSWORD=adminpass
+      - DB_PATH=/app/data/notes.db