Update Dockerfile to remove in-tree-build

Author: cbpowell

Dockerfile

@@ -3,12 +3,12 @@ MAINTAINER Charles Powell <[email protected]>
 
 # Install all dependencies
 ADD . /senselink
-RUN pip install /senselink --use-feature=in-tree-build
+RUN pip install /senselink
 
 # Make non-root user
 RUN useradd --create-home appuser
 WORKDIR /home/appuser
 USER appuser
 
 # Run
-CMD ["python", "-m", "senselink"]
+CMD ["python", "-m", "senselink"]