Python app passing config file trhough Docker

Question

I created a stand-alone application with Python3 that accepts a file as input, however I am not able to let it work properly. Once installed on my system I run the application as myapp -accounts ./accounts.yaml.

Now, I am trying to replicate this behaviour on a Docker container: I would like to do something like docker run --name myapp myapplatest -accounts ./accounts.yaml where the file accounts.yaml is stored in the local folder. However, I am still receiving this error:

Traceback (most recent call last):
  File "/usr/local/bin/myapp", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/dist-packages/myapp/main.py", line 17, in main
    with open(args.accounts, "r") as acc:
FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.7/dist-packages/myapp/accounts.yaml'

---

Here it is the latest part of the Dockerfile I created for the app

RUN mkdir /home/myapp
WORKDIR /home/myapp
RUN apt install -y python3-pip 
COPY . .
RUN python3 -m pip install --upgrade pip
RUN python3 -m pip install -r requirements.txt
RUN python3 -m pip install .

ENTRYPOINT ["myapp"] CMD[""]

The cli.py used to catch the args is

def full_path(string: str):
    script_dir = os.path.dirname(__file__)
    return  os.path.normpath(os.path.join(script_dir, string))

def myapp_args(parser: argparse.ArgumentParser):
    parser.add_argument("-accounts", type=full_path, default="../accounts.yaml",
                        help="Specify the Yaml file containing the accounts information")
    return parser.parse_args()

The main.py just calls the parser

def main():
    parser = argparse.ArgumentParser()
    args = myapp_args(parser)
    with open(args.accounts, "r") as acc:
        accounts = yaml.safe_load(acc)

The setup.py contains the following line of code to install correctly the package

    include_package_data=True,
    entry_points={
        'console_scripts': [
            'myapp = myapp.main:main',
        ],
    },

---

I tried to run docker sharing a folder that contains the file accounts.yaml but with no success docker run --name myapp --mount type=bind,source="$(pwd)"/accounts.yaml,target=/home/myapp/accounts.yml myapp:latest -accounts ./accounts.yaml But I always have the same error. What could it be? I do not understand why it looks for the file in the /usr/lib... while I am calling the command in the WORKDIR.

EDIT

I think to have misexplained the question. I have no problems passing the file into the container. If I enter into it and list the files, the account.yaml is there, in the project root:

 docker run --name myapp -it --entrypoint sh --mount type=bind,source="$(pwd)"/accounts.yaml,target=/home/myapp/accounts.yaml myapp:latest
# ls
Dockerfile   README.md      myapp           myapp.png  requirements.txt  sonar-project.properties
MANIFEST.in accounts.yaml      setup.py
# exit

However, the error is the first one I posted in the questions: the program looks for the file in the /usr/local/lib... rather than the project root where it is invoked.