To build singularity images and push them into an sregistry.
Singularity 2.5.1 is installed.
sregistry is installed from its github repository. After cloning the commit cb595c0b3371514c648b1844a914f861fb842d4f is checked out since an installation from pip (pip install sregistry) or the repository at HEAD installed a version that produced errors on using push.
The file /sregistry_file contains a template .sregistry file, that can be sourced after setting the variables
$SREGISTRY_TOKEN, $SREGISTRY_USERNAME and $SREGISTRY_HOSTNAME. The sourced variable $SREGISTRY_FILE can than be feed into ~/.sregistry using echo.
export SREGISTRY_TOKEN=alonghash123
export SREGISTRY_USERNAME=pushinguser
export SREGISTRY_HOSTNAME=mysregistry.com
source /sregistry_file
echo $SREGISTRY_FILE > ~/.sregistry
sregistry push ...