Thanks for these. It's good to see someone else building them!
I have the same problem using your 0.18.3 lemmy-ui image as I do when I build it - it just doesn't seem to work on my instance. None of the feed loads up and the selector buttons don't either.
I've seen people have similar issues on my issue tracker. Turns out it was caused by Cloudflare's JS minimization or rocket-loader being enabled. Something changed in 0.18.3 that made it incompatible with those Cloudflare features. If you use the Cloudflare proxy to serve your site, you will need to turn those off.