Can't detect failure from container

Using the Docker container, it's not possible to detect failures as the process always exits cleanly.

```
# docker run commercetools/commercetools-project-sync:5.5.1
{"timestamp":"2025-05-01T17:17:16.1517Z","severity":"ERROR","loggerName":"com.commercetools.project.sync.CliRunner","message":"Failed to run sync process.","stackHash":"b3d4f391","stackTrace":"c.c.p.s.e.CliException: Please pass at least 1 option to the CLI.\n"}
# echo $?
0
```

Working example:

```
# docker run debian /bin/sh -c "exit 5"
# echo $?
5
```