Testing metalibm from the demo Docker image

A docker image is available with a demonstration version of metalibm:
docker run -ti nibrunie/metalibm:demo

The basic metalibm commands can be tested within this image:
cd /home/metalibm
export PYTHONPATH=$PWD:$PYTHONPATH
export ML_SRC_DIR=$PWD
python3 metalibm_functions/ml_exp.py --auto-test 1000 --execute

The Dockerfile used to build this image is:
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FROM ubuntu:latest

# updating repo list
RUN apt-get update

# installing basic packages (build, repo management, ...)
RUN apt-get install -y build-essential
RUN apt-get install -y git
RUN apt-get install -y wget

# install sollya's dependency
RUN apt-get install -y libmpfr-dev libmpfi-dev libfplll-dev libxml2-dev

RUN apt-get install -y python3 python3-setuptools libpython3-dev python3-pip

# install sollya from its current weekly release (which implement sollya_lib_obj_is_external_data
# contrary to sollya 7.0 release)
WORKDIR  /home/
RUN wget http://sollya.gforge.inria.fr/sollya-weekly-08-18-2019.tar.gz
RUN tar -xzf sollya-weekly-08-18-2019.tar.gz
WORKDIR /home/sollya-weekly-08-18-2019/
RUN mkdir -p /app/local/python3/
RUN ./configure --prefix /app/local
RUN make -j8
RUN make install


# installing pythonsollya
WORKDIR /home/
ENV PATH=/app/local/bin:$PATH
ENV SOLLYA_DIR=/app/local/
ENV PREFIX=/app/local/
ENV INSTALL_OPTIONS="-t /app/local/"

# installing pythonsollya from gitlab version
RUN git clone https://gitlab.com/metalibm-dev/pythonsollya /home/new_pythonsollya/

# for python 3
WORKDIR /home/new_pythonsollya/
RUN make SOLLYA_DIR=/app/local/ PREFIX=/app/local/ INSTALL_OPTIONS="-t /app/local/python3/" PYTHON=python3 PIP=pip3 install

# checking pythonsolya install
RUN apt-get install python3-six
RUN LD_LIBRARY_PATH="/app/local/lib" python3 -c "import sollya"

# installing gappa
WORKDIR /home/
RUN apt-get install -y libboost-dev
RUN wget https://gforge.inria.fr/frs/download.php/file/37624/gappa-1.3.3.tar.gz
RUN tar -xzf gappa-1.3.3.tar.gz
WORKDIR /home/gappa-1.3.3/
RUN ./configure --prefix=/app/local/
RUN ./remake
RUN ./remake install

# downloading metalibm
WORKDIR /home/
RUN git clone https://github.com/kalray/metalibm.git
WORKDIR /home/metalibm/

# testing metalibm install
ENV LD_LIBRARY_PATH=/app/local/lib/
ENV PYTHONPATH=/app/local/python3/
RUN PYTHONPATH=$PWD:$PYTHONPATH  ML_SRC_DIR=$PWD python3 valid/soft_unit_test.py