Arun added singularity to /usr/local/bin

octopus01:~$ /usr/local/bin/singularity shell shub://vsoch/hello-world
Progress ||----------------------------------|   0.0%
Progress |===================================| 100.0%
Singularity: Invoking an interactive shell within container...

Singularity vsoch-hello-world-master-latest.simg:~>
Singularity vsoch-hello-world-master-latest.simg:~> hello
bash: hello: command not found
Singularity vsoch-hello-world-master-latest.simg:~>
Display all 727 possibilities? (y or n)
Singularity vsoch-hello-world-master-latest.simg:~> cat /etc/issue
Ubuntu 14.04.6 LTS \n \l