Tried to create Singularity Container of OpenFOAM v5 but failed to run

ubuntu1710_openfoam5.def

Bootstrap: docker
From: ubuntu:17.10

%post
    apt-get -y update
    apt-get -y upgrade
    apt-get -y install apt-file
    apt-get -y install software-properties-common
    apt-get -y install wget
    apt-get -y install apt-transport-https
    add-apt-repository http://dl.openfoam.org/ubuntu
    sh -c "wget -O - http://dl.openfoam.org/gpg.key | apt-key add -"
    apt-get -y update
    apt-get -y install openfoam5
    # sed -ie '$ a \. /opt/openfoam5/etc/bashrc' /root/.bashrc
    echo '. /opt/openfoam5/etc/bashrc' >>$SINGULARITY_ENVIRONMENT

%runscript
    simpleFoam