README

Contains a template to create a Singularity Julia container with 1.7.1 on Fedora 35, with a user specified package pre-installed.

Use case : you're sharing private or public work but don't want your users to have to install Julia, deal with dependencies etc.

Usage

sudo singularity build myimage.sif singularity_template.def

After creation:

singularity exec myimage.sif julia --project=/opt/MyPackage.jl

singularity shell myimage.sif
Singularity>julia --project=/opt/MyPackage.jl

Notes

• This sets the JULIA_DEPOT_PATH variable (inside the container) to a container folder, to ensure we're using the environment inside the container, not outside. If you prefer to use the outside Julia env, remove the depot path steps, but note this will write to ~/.julia.
• Julia interactive use will write to logs, in order to enable this without making the container writable, we map the log directory to /dev/shm (tmpfs on Linux), which by POSIX should exist and be user writable. For execution of scripts you do not need this, so you could omit it.

Customizing

Replace MyPackage.jl with your own package. Optionally add extra dependencies (dnf or conda, ...).