PyCharm reports 'unresolved reference' on Python imports with docker-compose interpreter running

PyCharm reports ‘unresolved reference’ to Python imports with docker-compose interpreter running.
see image attached
unresolved references e.g. in settings.py

I have already read and tried some problems of the same kind and the solution answers on this portal, like marking the folders in the PYCharm IDE as source root. Also I have used the Repair IDE function a lot to rebuild the indexes. Nothing. Nothing has helped so far.

I’m having this problem with PyCharm since I’m not running my Python installation in a venv and switching the PyCharm interpreter to it, but working with a Docker Compose environment.

I have created a dockerfile and a docker-compose.yml file for this purpose. If I use the terminal command "docker compose up", the container environment runs and my Python/Django application can also be started without errors via the browser. The respective logs of the containers do not cause any problems either.So the problem doesn’t seem to be with my Docker environment, but rather with how the PyCharm IDE interacts with the Docker environment.

here is my Dockerfile code:

FROM python:3.10.4-slim-bullseye

# Set environment variables
ENV PIP_DISABLE_PIP_VERSION_CHECK 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Set work directory
WORKDIR /cpp_base

# Install dependencies
COPY ./requirements.txt .
RUN pip install -r requirements.txt

# Copy project
COPY . .

and here my docker-compose.yml:

version: "3.9"

services:
  web:
    build: .
    container_name: python_django
    command: python /cpp_base/manage.py runserver 0.0.0.0:8000
    volumes:
      - .:/cpp_base
    ports:
      - "8000:8000"
    depends_on:
      - db
  db:
    image: postgres:14.5
    container_name: postgres_14.5
    restart: always
    ports:
      - "5432:5432"
    environment:
       POSTGRES_DB: cpp_base
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
    volumes:
      - postgres_data:/var/lib/postgresql/data

  pgadmin:
    container_name: pgadmin4_container
    image: dpage/pgadmin4
    restart: always
    volumes:
      - pgadmin_data:/var/lib/pgadmin
    environment:
      PGADMIN_DEFAULT_EMAIL: [email protected]
      PGADMIN_DEFAULT_PASSWORD: root
    ports:
      - "5050:80"

  blackd:
    restart: always
    image: docker.io/pyfound/black
    command: blackd --bind-host 0.0.0.0 --bind-port 45484
    ports:
      - "45484:45484"

  portainer:
    image: portainer/portainer-ce:latest
    container_name: portainer
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ./portainer-data:/data
    ports:
      - "9000:9000"

volumes:
  postgres_data:
  pgadmin_data:

In my PyCharm Ide:

• Connect to docker daemon
  Settings->Build,Execution, Deployment, see attached Image

• Add new Interpreter
  Interpreter Docker-Compose configuration image, see attached file

• select the new Interpreter and see that the all needed Packages were there
  Interpreter Selection and Package list, see attached file

• configure a Run/Debug Configuration
  see attached configuration image

After all these configurations, I was able to start the Docker Environment inside the Ide with the green triangle play button. The code also seems to run because I can see the Django default app in the browser. I don’t have the slightest idea why the IDE makes the red underlines though. The funny thing is that if I don’t select any interpreter within the IDE I can still run the application and I don’t get any unresolved messages. So only when I set the interpreter to the "web" service in the Docker compose file the IDE starts to complain.

Does anyone know help.
Thank you very much.

My Software Versions:

• PYCharm 2022.2.2
• Windows 11, 10.0.22000
• Docker v2.12.0, running on WSL2
• Python 3.10.4
• Django 4.1