Import files in docker compose with volumes

I need to import a couple of files in my docker-compose project to be able to read them and use them in a gunicorn file configuration. Here is my current docker compose:

version: "3.9"

services:
  db: 
    container_name: my_table_postgres
    image: postgres
    ports:
      - 5432/tcp
    volumes:
      - my_table_postgres_db:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=my_table_postgres
      - POSTGRES_USER=dev
      - POSTGRES_PASSWORD=Ieyh5&RIR48!&8fc

  redis: 
    container_name: redis
    image: redis
    ports:
      - 6739:6739/tcp
    environment:
      - REDIS_HOST=redis-oauth-user-service
    volumes:
      - redis_data:/var/lib/redis/data/

  my_table:
    container_name: my_table
    build: .
    command: ["python", "-m", "gunicorn", "--bind", "0.0.0.0:5000", "-c", "gunicorn.conf.py", "mytable.wsgi"]
    volumes:
      - .:/api
      - certs:/etc/letsencrypt/live/api.my-table.it
    ports:
      - "5000:5000"
    depends_on:
      - db
      - redis

  celery:
    image: celery
    container_name: celery
    restart: unless-stopped
    build:
      context: .
      dockerfile: Dockerfile
    command: ['python', '-m', 'celery', '-A', 'mytable' ,'worker', '-l', 'INFO']
    volumes:
      - .:/api
    depends_on:
      - redis
      - my_table
    links:
      - redis

  nginx:
    build: ./nginx
    ports:
      - "8000:80"
    depends_on:
      - my_table

volumes:
  my_table_postgres_db:
  redis_data:

And here are the lines that I am using to read the files:

certfile = "fullchain.pem"
keyfile = "privkey.pem"

But each time I run, the following error occurs:

table    |     client = ssl.wrap_socket(client, server_side=True,
my_table    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
my_table    |   File "/usr/local/lib/python3.11/ssl.py", line 1443, in wrap_socket
my_table    |     context.load_cert_chain(certfile, keyfile)
my_table    | IsADirectoryError: [Errno 21] Is a directory

So that means that the path is incorrect. How can I fix the path in the docker compose file and also in the other file, in order to make them meet together and use the correct file?

Thank you a lot

Here is the Dockerfile as suggested from the comments:

FROM python:3.11

# Managing user
RUN useradd -ms /bin/bash devuser
USER devuser
WORKDIR /home/devuser

# Keeps Python from generating .pyc files in the container
ENV PYTHONDONTWRITEBYTECODE=1

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

COPY --chown=devuser:devuser requirements.txt requirements.txt
RUN pip install --user --default-timeout=1000 --upgrade pip
RUN pip install --user --default-timeout=1000 -r requirements.txt

EXPOSE 5000

COPY --chown=devuser:devuser . .

ENTRYPOINT [ "sh", "entrypoint.sh" ]

Not sure why it's reported as a directory, can you share your file tree? The Dockerfile will also help.

Assuming that fullchain.pem and privkey.pem are inside the certs folder, you'd need to provide the path to these files in your configuration. As you're mounting . to /api, you can use the configuration below:

certfile = "certs/fullchain.pem"
keyfile = "certs/privkey.pem"

This again will work only if your work directory is set to /api in your container image.