Apptainer (formerly Singularity) simplifies the creation and execution of containers, ensuring software components are encapsulated for portability and reproducibility.

Doc : https://apptainer.org/documentation/

Simple example to test apptainer. Runs Appine container and extracts information within its files ( /etc/alpine-release).

tmatejuk@jumphost-17:~$ srun -c1 --mem=14G --pty bash -l

tmatejuk@node098:~$ apptainer --version
apptainer version 1.4.3
tmatejuk@node098:~$ 

tmatejuk@node098:~$ apptainer exec docker://alpine cat /etc/alpine-release
INFO:    Converting OCI blobs to SIF format
WARNING: 'nodev' mount option set on /tmp, it could be a source of failure during build process
INFO:    Starting build...
INFO:    Fetching OCI image...
3.6MiB / 3.6MiB [=============================================================================================] 100 %0s
INFO:    Extracting OCI image...
INFO:    Inserting Apptainer configuration...
INFO:    Creating SIF file...
[============================================================================================================] 100 % 0s
3.22.2
tmatejuk@node098:~$

tmatejuk@node098:~$ exit
logout
tmatejuk@jumphost-17:~$