Prepare software and data

Coming soon ...

method 1 - sandbox 
singularity build --sandbox new_alpine/ /singularity/alpine.3.15.3.sif
singularity exec new_alpine vim
singularity exec --writable new_alpine apk update 
singularity exec --writable new_alpine apk add vim
singularity exec new_alpine vim
singularity build new-alpine.sif new_alpine
rm -rf new_alpine
singularity build --sandbox new_alpine/ new-alpine.sif
singularity exec new-alpine.sif vim

method 2 - use Singularity Definition Files
singularity build alpine-with-vim.sif /test/new-alpine.def
singularity exec alpine-with-vim.sif vim

The following example shows how to install the Gym library from OpenAI onto our PyTorch image for reinforcement learning research.

vi gym.def
# BootStrap: localimage
# From: /pfss/containers/pytorch.22.09-py3.sif
#
# %post
#     pip install gym==0.24.1 gym[atari,accept-rom-license]==0.24.1
#     pip install atari-py==0.2.9 pybullet==3.2.5