Fixing ImageList Go code
Fixing ImageList Go code

Original: on line 18 we have `images, err := cli.ImageList(context.Background(), types.ImageListOptions{})` which gives us an error of:

```
# command-line-arguments
./main.go:12:2: ctx declared but not used
```

*Fix:* on line 18 we need to have `images, err := cli.ImageList(ctx, types.ImageListOptions{})`
docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io