Docker compose in 01-getting-started not working

```
$ fly -t lite login -c http://127.0.0.1:8080
logging in to team 'main'

could not reach the Concourse server called lite:

    Get http://127.0.0.1:8080/api/v1/info: dial tcp 127.0.0.1:8080: connect: connection refused

is the targeted Concourse running? better go catch it lol
```
