docker-containers is always sorted alphabetically

### Description

When using `type: docker-containers` with explicit entries, i.e. `hide-by-default: true` and then a couple of entries with `hide: false`, the entries are sorted alphabetically. It would be great if it would preserve the order that we declare them in the YAML, similar to how `type: monitor` works

Start by locating the docker-containers widget and the code that orders its explicitly shown entries; compare it with the ordering used by type: monitor. Done means entries with hide-by-default: true and hide: false remain in their YAML declaration order rather than being alphabetized.

Written by the indexing model from the issue text.