upd dockerfile

Dockerfile

@@ -4,8 +4,7 @@
 FROM ubuntu:14.04
 # FROM phusion/baseimage
 
-MAINTAINER Marco Zocca <zocca marco gmail>
-# based on `docker.openmpi` by Ole Weidner <[email protected]>
+MAINTAINER Ole Weidner <[email protected]>
 
 ENV USER mpirun
 
@@ -15,7 +14,8 @@ ENV DEBIAN_FRONTEND=noninteractive \
 
 RUN apt-get update -y && \
     apt-get upgrade -y && \
-    apt-get install -y --no-install-recommends openssh-server python-mpi4py python-numpy python-virtualenv python-scipy gcc gfortran openmpi-checkpoint binutils
+    apt-get install -y --no-install-recommends openssh-server python-mpi4py python-numpy python-virtualenv python-scipy gcc gfortran openmpi-checkpoint binutils && \
+    apt-get clean && apt-get purge && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN mkdir /var/run/sshd
 RUN echo 'root:${USER}' | chpasswd