Install Singularity

Installing Singularity is required in all environment and for all container runs Singularity can be obtained from source from github, and then built and installed locally. see http://singularity.lbl.gov/

git clone https://github.com/singularityware/singularity.git 
cd singularity
./autogen.sh
./configure --prefix=/usr/local
make
sudo make install

Check installation:

singularity --help