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Delete and Pull

Let's delete our local copy of the image, then pull it back down from Docker Hub. Just like with GitHub, the nice thing about having images in the cloud is that if something happens to your computer, or you're working on another machine, you can always pull down your images.

Assignment

Remove your local USERNAME/goserver image:
```
docker image rm USERNAME/goserver
```
Pull it back down from Docker Hub:
```
docker pull USERNAME/goserver
```

Run it to make sure it works:

docker run -p 8991:8991 USERNAME/goserver

With the container running, run and submit the CLI tests.