anchor.diff:  RUN rm -rf /tmp/mpich-test
   
   
  -#### FINAL CLEAN UP ####
  +#### CLEAN UP ####
   WORKDIR /
   RUN rm -rf /tmp/*
   
   
   #### ADD NORMAL USER ####
  -ENV USERNAME user
  +ENV USERNAME alpine
   RUN adduser -D ${USERNAME} \
  -    && echo "${USERNAME}   ALL=(ALL) ALL" >> /etc/sudoers 
  +      && echo "${USERNAME}   ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers 
  +
  +
  +#### CREATE WORKING DIRECTORY FOR USER ####
  +ENV WORKING_DIRECTORY /project
  +RUN mkdir ${WORKING_DIRECTORY}
  +RUN chown -R ${USERNAME} ${WORKING_DIRECTORY}
  +
  +WORKDIR ${WORKING_DIRECTORY}
   USER ${USERNAME}
   
   
  -WORKDIR /home/${USERNAME}
  -CMD ["ash"] +CMD ["/bin/ash"] 
  
positive.code: RUN mkdir /tmp/mpich-src
  WORKDIR /tmp/mpich-src
  RUN wget http://www.mpich.org/static/downloads/${MPICH_VERSION}/mpich-${MPICH_VERSION}.tar.gz \
      && tar xfz mpich-${MPICH_VERSION}.tar.gz  \
      && cd mpich-${MPICH_VERSION}  \
      && ./configure ${MPICH_CONFIGURE_OPTIONS}  \
      && make ${MPICH_MAKE_OPTIONS} && make install \
      && cd /tmp/ && rm -rf /tmp/mpich-src
  
  
  #### TEST MPICH INSTALLATION ####
  
negative.code: FROM alpine:3.4
  # In case the main package repositories are down, use the alternative:
  # FROM gliderlabs/alpine:3.4
  
  MAINTAINER Nikyle Nguyen <NLKNguyen@MSN.com>
  
  RUN apk update && apk upgrade \
        && apk add --no-cache build-base
  
  
  #### INSTALL MPICH ####
  # Available at http://www.mpich.org/static/downloads/
  