Enhance Docker setup and user notification features

- Updated docker-compose.yml to include environment variables and health checks for the app service.
- Modified Dockerfile to install curl for health checks and adjusted the build process for backend services.
- Improved user notification handling in activation, blocking, and config revocation commands by integrating Telegram notifications.
- Added new test cases to validate the updated command handlers and Telegram notifier functionality.
- Enhanced documentation to reflect the new Telegram bot features and user management improvements.

docker-compose.yml

@@ -21,13 +21,29 @@ services:
     depends_on:
       db:
         condition: service_healthy
+    # Секреты (Jwt__SigningKey, AdminSeed__Password, Telegram__BotToken, ...) — из .env,
+    # см. .env.example. ConnectionStrings__Default ниже переопределяет .env: адрес БД внутри
+    # сети compose всегда 'db', не значение из .env (которое рассчитано на локальный запуск).
+    env_file:
+      - .env
     environment:
       ASPNETCORE_ENVIRONMENT: Production
       ASPNETCORE_HTTP_PORTS: '8080'
       ConnectionStrings__Default: 'Host=db;Port=5432;Database=${POSTGRES_DB:-pnvpanel};Username=${POSTGRES_USER:-pnvpanel};Password=${POSTGRES_PASSWORD:-pnvpanel}'
+    volumes:
+      # Data Protection key-ring (шифрование секретов нод at-rest) должен пережить пересоздание
+      # контейнера — иначе расшифровка паролей нод после рестарта станет невозможна.
+      - dp_keys:/app/keys
+    healthcheck:
+      test: ['CMD', 'curl', '-f', 'http://localhost:8080/health']
+      interval: 15s
+      timeout: 5s
+      start_period: 20s
+      retries: 5
     ports:
       - '8080:8080'
     restart: unless-stopped
 
 volumes:
   pgdata:
+  dp_keys: