Docker image with daphne ASGI and python 3.9.11 that you can use as a base image for your project. Define your Dockerfile as shown below:
FROM daphne:latest
# install dependecies
COPY ./requirements.txt ./requirements.txt
RUN pip install -r requirements.txt
# copies the entire project folder, containing the main application
COPY ./app ./app
# expose port
EXPOSE 8000
ENTRYPOINT ["daphne", "-b", "0.0.0.0", "-p", "8000", "./app/main:app"]