Remove dockerfile (now rely on virtualenv)

Dockerfile

@@ -1,12 +0,0 @@
-FROM debian
-
-RUN apt-get update
-RUN apt-get install -y python-dev python-pip
-
-COPY requirements.txt /tmp/
-RUN pip install -r /tmp/requirements.txt
-
-WORKDIR /mnt
-
-ENTRYPOINT ["fab"]
-CMD ["serve"]