fix Dockerfile

Dockerfile

@@ -2,10 +2,11 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-COPY . .
+COPY ./pomodoro_bot ./pomodoro_bot
+COPY requirements.txt ./
 
 ENV PYTHONPATH=/app
 
 RUN pip install --no-cache-dir -r requirements.txt
 
-CMD ["python", "main.py"]
+CMD ["python", "-m", "pomodoro_bot.main"]