title: Docker compose - can't find manage.py file
body: <p>I want to create with docker-compose 2 Docker containers. 1 for DB (Mongo) and 1 for web (Django).
  Here are my files</p>
  
  <p><strong>docker-compose.yml</strong></p>
  
  <pre><code>version: '3'
  services:
    db:
      image: mongo
      command: mongod
    web:
      build: code/
      command: python manage.py runserver 0.0.0.0:8000
      volumes:
        - .:/code
      ports:
        - "8000:8000"
      depends_on:
        - db
  </code></pre>
  
  <p><strong>code/Dockerfile</strong></p>
  
  <pre><code>FROM python:3
  ENV PYTHONUNBUFFERED 1
  RUN mkdir /code
  WORKDIR /code
  COPY requirements.txt /code/
  RUN pip install -r requirements.txt
  COPY cleverInvestWeb/ /code/
  </code></pre>
  
  <p>In the directory <strong>code/cleverInvestWeb/</strong> is my manage.py file from django.</p>
  
  <p>when i run <code>docker-compose up</code> it throws me the following error:</p>
  
  <pre><code>web_1  | python: can't open file 'manage.py': [Errno 2] No such file or directory
  </code></pre>
  
  <p>When i start the container via Docker itself with <code>docker exec -it dockerdiplom_web bash</code> and do an <code>ls</code> there it shows the <code>manage.py</code> file.</p>
  
  <p>Do you have an idea why docker-compose doesn't find my file when starting?</p>