While I do not agree with _every_ style change, this will force Dokku to have consistent formatting across all shell scripts, which is arguably a Good Thing™.
The command used to reprocess everything is:
```shell
shfmt -l -bn -ci -i 2 -w .
```
Unlocking an app will not stop running deploys, so users may need to clean up. However, it is useful for deploys that fail in unusual ways that cause the lock to stay around.
Closes#2883