I am working on a development environment on SP 2016 on prem with feature pack 2. I have created a "Hello world" web part following this example. I am trying to deploy the SPFx web part to a classic on prem page, so I created the app catalog where I added the .sppkg - file. I managed to add the web part to the classic page by using the ribbon, but the web part only works when I am running "gulp - serve" in the background on the project. Is it suppoed to be like this? I thought adding the web part to the catalog should do the trick for me.
If I have to deploy the SPFx-web parts the oldschool way, like in this sample, I will be very dissapointed: https://rasper87.wordpress.com/2018/04/24/provision-spfx-web-parts-to-classic-sites-part-1-include-spfx-assets-package-inside-wsp/
It is very easy to get confused with all the documentation and samples out there with add-ins, app catalog, developer site, apps and then SPFx online and on prem.