I am building my flask application on ubuntu image,

below is snippet of my dockerfile

FROM ubuntu:24.04

# Install required packages and Python
RUN apt-get update && 
    apt-get install -y python3 python3-pip python3-venv default-libmysqlclient-dev build-essential pkg-config curl && 
    rm -rf /var/lib/apt/lists/*

# Prevents Python from writing pyc files.
ENV PYTHONDONTWRITEBYTECODE=1

# Turns off buffering for easier container logging
ENV PYTHONUNBUFFERED=1

RUN --mount=type=cache,target=/root/.cache/pip 
   --mount=type=bind,source=requirements.txt,target=requirements.txt 
    . ./venv/bin/activate && 
    python3 -m pip install --upgrade pip && 
    pip3 install -r requirements.txt && 
    pip3 install debugpy

COPY . .

# Expose the port that the application listens on.
EXPOSE 5000

# Run the application.
CMD ["./venv/bin/python", "app.py"]

the issue is I want to debug using breakpoints on my APIs, but I am not able to do that, I have tried with multiple methods available on internet, those does not seems to work, please help in solving above issue