simplify the Dockerfile

.dockerignore

@@ -0,0 +1,5 @@
+Dockerfile
+LICENSE
+circle.yml
+README.md
+.git

docker/Dockerfile → Dockerfile

@@ -12,30 +12,15 @@
 #
 # sudo docker run --rm -it technoskald/maltrieve
 
-FROM ubuntu:14.04
+FROM python:2.7
 MAINTAINER Michael Boman <[email protected]>
 
-USER root
-RUN apt-get update && \
-  apt-get dist-upgrade -y
-RUN apt-get install -y --no-install-recommends \
-    gcc \
-    git \
-    libpython2.7-stdlib \
-    python2.7 \
-    python2.7-dev \
-    python-pip \
-    python-setuptools
-RUN rm -rf /var/lib/apt/lists/* && \
-  pip install --upgrade pip && \
-  groupadd -r maltrieve && \
+RUN groupadd -r maltrieve && \
   useradd -r -g maltrieve -d /home/maltrieve -s /sbin/nologin -c "Maltrieve User" maltrieve
 
-WORKDIR /home
-RUN git clone https://github.com/krmaxwell/maltrieve.git && \
-  cd maltrieve && \
-  git checkout dev && \
-  pip install -e . && \
+WORKDIR /home/maltrieve
+ADD . /home/maltrieve
+RUN pip install -r requirements.txt && \
   chown -R maltrieve:maltrieve /home/maltrieve
 
 RUN mkdir /archive && \