title: When run docker-compose up I get python: can't open file 'manage.py': [Errno 2] No such file or directory
body: <p>This is my Dockerfile:</p>
  
  <pre><code>FROM python:3.6.1
  
  # set working directory
  RUN mkdir -p /usr/src/app
  WORKDIR /usr/src/app
  
  # add requirements (to leverage Docker cache)
  ADD ./requirements.txt /usr/src/app/requirements.txt
  
  # install requirements
  RUN pip install -r requirements.txt
  
  # add app
  ADD . /usr/src/app
  
  # run server
  CMD python manage.py runserver -h 0.0.0.0
  </code></pre>
  
  <p>This is my docker-compose.yml:</p>
  
  <pre><code>version: '2.1'
  
  services:
  
    users-service:
      container_name: users-service
      build: .
      volumes:
        - .:/usr/src/app
      ports:
        - 5001:5000 # expose ports - HOST:CONTAINER
  </code></pre>
  
  <p>This is structure of my project dir (from which I run my docker commands):</p>
  
  <pre><code>├── docker-compose.yml
  ├── Dockerfile
  ├── env
  │   ├── bin
  │   ├── include
  │   ├── lib
  │   ├── lib64 -&gt; lib
  │   ├── pip-selfcheck.json
  │   ├── pyvenv.cfg
  │   └── share
  ├── manage.py
  ├── project
  │   ├── config.py
  │   ├── __init__.py
  │   └── __pycache__
  └── requirements.txt
  </code></pre>
  
  <p>First I run <strong>docker-compose build</strong> and get following output:</p>
  
  <pre><code>Building users-service
  Step 1/7 : FROM python:3.6.1
   ---&gt; 74145628c331
  Step 2/7 : RUN mkdir -p /usr/src/app
   ---&gt; Using cache
   ---&gt; 8b73b9540da2
  Step 3/7 : WORKDIR /usr/src/app
   ---&gt; Using cache
   ---&gt; 28d3452f6021
  Step 4/7 : ADD ./requirements.txt /usr/src/app/requirements.txt
   ---&gt; Using cache
   ---&gt; e92c334820c2
  Step 5/7 : RUN pip install -r requirements.txt
   ---&gt; Using cache
   ---&gt; db7ea8211cd1
  Step 6/7 : ADD . /usr/src/app
   ---&gt; 472c303e4297
  Removing intermediate container 7ee1b497cde4
  Step 7/7 : CMD python manage.py runserver -h 0.0.0.0
   ---&gt; Running in 31ae97876314
   ---&gt; 42c79e68f692
  Removing intermediate container 31ae97876314
  Successfully built 42c79e68f692
  Successfully tagged flaskmicroservicesusers_users-service:latest
  </code></pre>
  
  <p>And then I run <strong>docker-compose up</strong> which return error:</p>
  
  <pre><code>Recreating users-service
  Attaching to users-service
  users-service    | python: can't open file 'manage.py': [Errno 2] No such file or directory
  users-service exited with code 2
  </code></pre>
  
  <p><strong>What I am missing here?</strong></p>