title: Running Docker image gives: Unable to load configuration from app.py
body: <p>I am using Docker on a Python Flask webapp, but am getting an error when I try and run it.</p>
  
  <pre><code>$ sudo docker run -t imgcomparer6
  unable to load configuration from app.py
  </code></pre>
  
  <p><strong>Python</strong></p>
  
  <p>In my app.py file, my only instance of <code>app.run()</code> in the webapp is within the <code>
   '__main__':</code> function (seen <a href="https://stackoverflow.com/questions/34615743/unable-to-load-configuration-from-uwsgi">here</a>)</p>
  
  <pre><code>if __name__ == '__main__':
      app.run(host="127.0.0.1", port=int("8000"), debug=True)
  </code></pre>
  
  <p><strong>Dockerfile</strong></p>
  
  <pre><code>FROM ubuntu:latest
  
  #Update OS
  RUN sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list
  RUN apt-get update
  RUN apt-get -y upgrade
  
  # Install Python
  RUN apt-get install -y python-dev python-pip
  
  
  RUN mkdir /webapp/
  
  # Add requirements.txt
  ADD requirements.txt /webapp/
  ADD requirements.txt .
  
  # Install uwsgi Python web server
  RUN pip install uwsgi
  
  # Install app requirements
  RUN pip install -r requirements.txt
  
  
  # Create app directory
  ADD . /webapp/
  
  # Set the default directory for our environment
  ENV HOME /webapp/
  WORKDIR /webapp/
  
  # Expose port 8000 for uwsgi
  EXPOSE 8000
  
  
  ENTRYPOINT ["uwsgi", "--http", "127.0.0.1:8000", "--module", "app:app", "--processes", "1", "--threads", "8"]
  #ENTRYPOINT ["python"]
  CMD ["app.py"]
  </code></pre>
  
  <p><strong>Directory Structure</strong></p>
  
  <pre><code>app.py
  image_data.db
  README.txt
  requirements.txt
  Dockerfile
  templates
   - index.html
  static/
   - image.js
   - main.css
   img/
     - camera.png
   images/
     - empty
  </code></pre>
  
  <p>EDIT:</p>
  
  <p>Docker images</p>
  
  <pre><code>castro@Ezri:~/Desktop/brian_castro_programming_test$ sudo docker images
  REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  imgcomparer6        latest              d2af1b18ec87        59 minutes ago      430 MB
  imgcomparer5        latest              305fa5062b41        About an hour ago   430 MB
  &lt;none&gt;              &lt;none&gt;              e982e54b011a        About an hour ago   430 MB
  imgcomparer2        latest              c7e3ad57be55        About an hour ago   430 MB
  imgcomparer         latest              a1402ec1efb1        About an hour ago   430 MB
  &lt;none&gt;              &lt;none&gt;              8f5126108354        14 hours ago        425 MB
  flask-sample-one    latest              9bdc51fa4d7c        23 hours ago        453 MB
  ubuntu              latest              6a2f32de169d        12 days ago         117 MB
  </code></pre>
  
  <p>Image Log (gives error)</p>
  
  <pre><code>sudo docker logs imgcomparer6
  Error: No such container: imgcomparer6
  </code></pre>
  
  <p>Tried running this, as suggested below:</p>
  
  <p>'$ sudo docker run -t imgcomparer6 ; sudo docker logs $(docker ps -lq)'</p>
  
  <pre><code>unable to load configuration from app.py
  Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.27/containers/json?limit=1: dial unix /var/run/docker.sock: connect: permission denied
  "docker logs" requires exactly 1 argument(s).
  See 'docker logs --help'.
  
  Usage:  docker logs [OPTIONS] CONTAINER
  
  Fetch the logs of a container
  </code></pre>
  
  <p>ps -a</p>
  
  <pre><code>CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS               NAMES
  e80bfd0a3a11        imgcomparer6        "uwsgi --http 127...."   54 minutes ago      Exited (1) 54 minutes ago                       musing_fermat
  29c188ede9ba        imgcomparer6        "uwsgi --http 127...."   54 minutes ago      Exited (1) 54 minutes ago                       kind_jepsen
  a58945d9cd86        imgcomparer6        "uwsgi --http 127...."   55 minutes ago      Exited (1) 55 minutes ago                       musing_wright
  ca70b624df5e        imgcomparer6        "uwsgi --http 127...."   55 minutes ago      Exited (1) 55 minutes ago                       brave_hugle
  964a1366b105        imgcomparer6        "uwsgi --http 127...."   55 minutes ago      Exited (1) 55 minutes ago                       clever_almeida
  155c296a3dce        imgcomparer6        "uwsgi --http 127...."   2 hours ago         Exited (1) 2 hours ago                          jovial_heisenberg
  0a6a3bb55b55        imgcomparer5        "uwsgi --http 127...."   2 hours ago         Exited (1) 2 hours ago                          sharp_mclean
  76d4f40c4b82        e982e54b011a        "uwsgi --http 127...."   2 hours ago         Exited (1) 2 hours ago                          kind_hodgkin
  918954bf416a        d73c44a6c215        "/bin/sh -c 'mkdir..."   2 hours ago         Exited (1) 2 hours ago                          amazing_bassi
  205276ba1ab2        d73c44a6c215        "/bin/sh -c 'mkdir..."   2 hours ago         Exited (1) 2 hours ago                          distracted_joliot
  86a180f071c6        d73c44a6c215        "/bin/sh -c '#(nop..."   2 hours ago         Created                                         goofy_torvalds
  fc1ec345c236        imgcomparer2        "uwsgi --http 127...."   2 hours ago         Created                                         wizardly_boyd
  b051d4cdf0c6        imgcomparer         "uwsgi --http 127...."   2 hours ago         Created                                         jovial_mclean
  ed78e965755c        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         elated_shirley
  a65978d30c8f        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         vigilant_wright
  760ac5a0281b        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         xenodochial_heyrovsky
  9d7d8bcb2226        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         sleepy_noyce
  36012d4c6115        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         adoring_hypatia
  deacab89f416        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         objective_franklin
  43e894f8fb9c        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         sleepy_hodgkin
  2d190d0fc6e5        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         modest_hoover
  b1640a039c31        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         affectionate_galileo
  baf94cf2dc6e        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         affectionate_elion
  2b54996907b6        d73c44a6c215        "/bin/sh -c '#(nop..."   3 hours ago         Created                                         elastic_wiles
  663d4e096938        8f5126108354        "/bin/sh -c 'pip i..."   15 hours ago        Exited (1) 15 hours ago                         admiring_agnesi
  </code></pre>