Singularity workflow¶
Create a Container¶
There are two ways to create a container 1) as a regular folder 2) as a disk image .simg
- as a regular folder within your specified directory
sudo singularity build --sandbox ubuntu/ docker://ubuntu
with this option you can use
tree -L 1 ubuntu
to list the content of the current sandbox directly
- as a disk image
sudo singularity build --writable ubuntu.img docker://ubuntu
For this option, you will get a single
ubuntu.img
, as a single container file.
Customize the Container¶
i.e. installed the required packages, library, software –
- as a regular folder
sudo singularity shell ubuntu
- as a disk image
sudo singularity shell --writable ubuntu.img
Building the container image¶
build into a squashfs image:
sudo singularity build ubuntu.simg ubuntu/
sudo singularity build ubuntu.simg docker://ubuntu
This will clean up the image and only keep the differences from docker://ubuntu
Reference¶
- Singularity Doc Flow <http://singularity.lbl.gov/docs-flow>