## Initial setup of Docker worker VM

Start the Docker daemon and a local Docker registry.

```sh
sudo systemctl start docker
sudo docker run -d -p 5000:5000 --restart=always --name registry registry:2
```

Place `repo2singularity` (see file in this gist) in `/usr/bin/` or somewhere on the `PATH`.

## Build a Singularity image from a Binder-compatible repo

Clone the Binder-compatible repo and 

```
git clone REPO_URL REPO_DIRECTORY
repo2singularity REPO_DIRECTORY IMAGE_NAME
```

This generates a `.sif` file in `/tmp/sifs`. Copy it to `nslshub01`.

```
scp /tmp/sifs/IMAGE_NAME nslshub01:/srv/jupyter/scontainers_available/
```

## Make it available to users

On `nslshub01`, create a soft link targeting `/srv/jupyter/scontainers_available/` from `/srv/jupyter/scontainers/`.

```sh
ln -s -T /srv/jupyter/scontainers_available/NAME /srv/jupyter/scontainers/NAME
```