Build image without pushing to package registry

I am trying to run the command
```
swift package build-container-image --from swift:slim
```
to run it locally without pushing it to a remote registry, but I got this error:
```
Missing expected argument '--repository '
```
Is it a must to push to a remote registry?

Start by reproducing `swift package build-container-image --from swift:slim` and inspect how the command handles the missing `--repository` argument. Trace the container-image build and publish entry points to determine whether a local-only result is supported; done means the expected local workflow is implemented or clearly documented and tested.

Written by the indexing model from the issue text.