# Singularity If you don't have admin access to your local computer, or you simply prefer it, you can use [Singularity](https://sylabs.io/guides/3.5/user-guide/) instead; this is also known as [Apptainer](https://apptainer.org/docs/user/latest/). You still need admin access to install Singularity, or a willing sysadmin to do it for you.[^f108] [^f108]: Singularity/Apptainer is already installed on all the systems in the Nevis particle-physics Linux cluster. To download the container and convert it to Singularity's .sif format: singularity pull docker://wgseligman/jupyter-pyroot After some processing, you'll have the image file `jupyter-pyroot_latest.sif`. Then you can run Singularity on that container: singularity run --bind=$PWD:/work jupyter-pyroot_latest.sif Note that while you can change the mapping of the /work directory within the container (see the Docker instructions above), you can't change Jupyter's binding to port 8080. This might be a problem if you're running on a shared computer system and more than one user wants to run this container at the same time. :::{figure-md} singularity-fig :align: center xkcd singularity by Randall Munroe :::