I have got the following Docker file

```
FROM jupyter/scipy-notebook

COPY . ./work

RUN pip install -r ./work/requirements.txt

WORKDIR /work 

CMD ["python", "./work/append_dependencies.py"]

```

and the following `docker-compose.yml`

```
version: '3.7'

networks:
  george:

services:
  jupyter:
    build: .
    image: jupyter/datascience-notebook:r-4.0.3
    environment:
      - JUPYTER_TOKEN=password
      - JUPYTER_ENABLE_LAB=yes

    volumes:
      - .:/home/jovyan/work
      - ./notebooks:/home/jovyan/work
      - ./src:/home/jovyan/work
    ports:
      - 7777:8888
    container_name: almond_analysis
    networks:
      - george

```

The project structure is:

```
almond_analysis:
    notebooks:
        data_exploration.ipynb
    src:
       __init__.py
       plots.py
    .gitignore
    docker-compose.yml
    Dockerfile
    README.md
    requirements.txt
    setup.py

```

The file `append_dependencies.py` looks like this:

```

import sys

sys.path.append("/home/jovyan/work")

```

What I would like to do is **execute the file `append_dependencies.py`** automatically after I type `docker compose up -d --build`. Right now, after I build and run my container (with `docker compose up -d --build`), the container crashes, i.e. after I type `docker ps` I get the following output:

```
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

```

I tried changing `CMD` to `ENTRYPOINT` but the result was the same.

**Does anyone know how to execute `append_dependencies.py` right after I build the container with `docker compose up -d --build`?**