Building from Singularity image

Briefly, one can use Singularity image as Bootstrap to build new i.e. to modify the original source image by adding new packages, programs or modifying setting.

Bootstrap: localimage
From: /path/to/container/file/or/directory

Note

When building from a local container, all previous definition files that led to the creation of the current container will be stored in a directory within the container called /.singularity.d/bootstrap_history. SingularityCE will also alert you if environment variables have been changed between the base image and the new image during bootstrap.