update dockerfile with memory_tempfile support

ci/docker_images/ubuntu/bionic/Dockerfile

@@ -18,6 +18,7 @@ RUN apt-get install -y cmake
 RUN apt-get install -y git
 RUN apt-get install -y vim
 RUN apt-get install -y ssh
+RUN apt-get install -y clang
 RUN apt-get install -y gcc
 RUN apt-get install -y gfortran
 RUN apt-get install -y cython
@@ -57,6 +58,7 @@ RUN apt-get install -y clinfo
 RUN pip install --upgrade pip
 RUN pip install --upgrade setuptools
 RUN pip install --upgrade backports.weakref
+RUN pip install --upgrade backports.tempfile
 RUN pip install --upgrade cffi
 RUN pip install --upgrade wheel
 RUN pip install --upgrade pytest
@@ -80,6 +82,7 @@ RUN pip install --upgrade pycairo
 RUN pip install --upgrade weave
 RUN pip install --upgrade argparse_color_formatter
 RUN pip install --upgrade numba
+RUN pip install --upgrade poetry
 
 # For documentation
 # RUN pip install --upgrade sphinx
@@ -207,9 +210,6 @@ RUN cd /tmp                                       \
  && cd -                                          \
  && rm -Rf /tmp/graph-tool-2.26
 
-# clang 6 for hysop build test
-RUN apt-get install -y clang
-
 # pyfftw (with R2R transforms - experimental branch)
 RUN cd /tmp                                      \
  && git clone https://github.com/drwells/pyFFTW  \
@@ -220,7 +220,7 @@ RUN cd /tmp                                      \
  && cd -                                         \
  && rm -Rf /tmp/pyFFTW
 
-# HPTT (tensor permutation library)
+# HPTT (CPU tensor permutation library)
 RUN cd /tmp
  && git clone https://gitlab.com/keckj/hptt \
  && cd hptt                                 \
@@ -234,6 +234,16 @@ RUN cd /tmp
  && cd /tmp                                 \
  && rm -Rf /tmp/hptt
 
+# fork of memory_tempfile for python 2.7
+RUN cd /tmp
+ && git clone https://gitlab.com/keckj/memory-tempfile \
+ && cd memory-tempfile \
+ && poetry install \
+ && poetry build \
+ && pip install ./dist/memory-tempfile-*.tar.gz \
+ && cd /tmp \
+ && rm -Rf /tmp/memory-tempfile
+
 # ensure all libraries are known by the runtime linker
 RUN ldconfig