Build a Docker container for the fastspecfit web-app.
=====================================================

```
docker build . -t desihub/fastspecfit-webapp
docker push desihub/fastspecfit-webapp:latest

docker tag desihub/fastspecfit-webapp:latest desihub/fastspecfit-webapp:v0.1
docker push desihub/fastspecfit-webapp:v0.1
```

To enter the container (with a shell prompt) on a laptop do:
```
docker pull desihub/fastspecfit-webapp:latest
docker run -it desihub/fastspecfit-webapp:latest
```
or
```
docker pull desihub/fastspecfit-webapp:v0.1
docker run -it desihub/fastspecfit-webapp:v0.1
```

Or at NERSC:
```
shifterimg pull docker:desihub/fastspecfit-webapp:latest
shifter --image docker:desihub/fastspecfit-webapp:latest bash
```
