Merge pull request #15 from ashcrow/docker-fix

WIP: Follow on fixes for Dockerfile.

Dockerfile

@@ -1,17 +1,23 @@
 FROM fedora
 MAINTAINER Red Hat, Inc. <container-tools@redhat.com>
 
-RUN dnf -y update && dnf -y install --setopt=tsflags=nodocs redhat-rpm-config python-pip python-virtualenv git gcc libffi-devel && dnf clean all
+RUN dnf -y update && dnf -y install --setopt=tsflags=nodocs redhat-rpm-config python-pip python-virtualenv git gcc libffi-devel
 
 ENV MHM_RELEASE v0.0.0
 ENV PYTHONPATH  /commissaire/src/
 
+# TODO: Pull a release?
 RUN git clone https://github.com/projectatomic/commissaire.git && \
+virtualenv /environment && \
+. /environment/bin/activate && \
 cd commissaire && \
 pip install -U pip && \
 pip install -r requirements.txt && \
 pip freeze > /installed-python-deps.txt
 
+# Clean up
+RUN dnf remove -y gcc git redhat-rpm-config libffi-devel && dnf clean all
+
 EXPOSE 8000
 WORKDIR /commissaire
-CMD python src/commissaire/script.py ${ETCD}
+CMD . /environment/bin/activate && python src/commissaire/script.py ${ETCD}