title: OSError when trying to pip install shapely inside docker container
body: <p>Could not find library geos_c or load any of its variants ['libgeos_c.so.1', 'libgeos_c.so']</p>
  
  <p>using the python:3.5.1 image I am trying to run a container that includes among other things it installs in requirements.txt shapely. When the docker container tries to install shapely I get the above error.</p>
  
  <p>RUN apt-get install libgeos-dev</p>
  
  <p>was something I saw trying to search the issue but that returns unable to locate package libgeos-dev</p>
  
  <p>summary:</p>
  
  <p>expected conditions: including shapely in the requirements.txt file results ins shapely being installed when the docker container is built
  actual conditions: An error message is recieved during build  <code>Could not find library geos_c or load any of its variants ['libgeos_c.so.1', 'libgeos_c.so']</code></p>
  
  <p>Steps to reproduce:</p>
  
  <p>use docker-compose to build on</p>
  
  <p>Docker-compose.yml: </p>
  
  <pre><code>app:
          build: ${APP_REPO}
  </code></pre>
  
  <p>Dockerfile:</p>
  
  <pre><code>FROM python:3.5.1-onbuild
  </code></pre>
  
  <p>Requirements.txt:</p>
  
  <pre><code>shapely
  </code></pre>
  
  <p>(Simplified to attempt to isolate issues.)</p>