What do you think about switching from npm install to npm ci?

I’m not an npm/node expert, but my understanding is that there could be some advantages.

If we use npm ci, we’ll get reliable builds. Users who install a release get exactly the versions that worked on the release.

barnabycolby did’t update the module since 5 years. I recommend to use a newer fork. Like this one: https://github.com/shbatm/MMM-Carousel/

The following config should work with the new fork:

     {
            module: 'MMM-Carousel',
            config: {
                transitionInterval: 40000,
                ignoreModules: ['clock', 'alert', 'MMM-Tools', 'MMM-OpenmapWeather', 'MMM-PublicTransportHafas', 'weatherforecast', 'calendar', 'newsfeed', 'MMM-Remote-Control', 'MMM-Traffic', 'MMM-Fuel'],
                mode: 'slides',
                slides: {
                    "Slide 1": ['MMM-SoccerLiveScore'],
                    "Slide 2": ['MMM-Formula1', 'MMM-COVID19-AMPEL']
                }
            }
    }