oh duh
https://github.com/wasi-master/13ft/blob/main/docker-compose.yaml - this is the 12ft.io replacement i use. there are a few clones but this is the one I like, it's real barebones and uses very little overhead
https://komga.org/ - komga library
https://github.com/Snd-R/komf - komf - this isn't strictly necessary but it fetches metadata for your komga library from sites like manga updates. can be a bit of a pain to configure
https://github.com/Snd-R/komf-userscript - this is a tampermonkey script that makes komf MUCH easier to use
https://github.com/dazedcat19/FMD2 - this is an app that rips manga from most of the "free manga" indexer sites like mangadex, bato, etc. docker and kubernetes version at https://github.com/ElryGH/docker-FMD2
you can read directly via komga web but frankly it kind of sucks for that. i prefer using an app. tachiyomi was the gold standard but companies threatened it and they stopped development. there are several forks now that are all good in various ways. i prefer mihon https://mihon.app/ but there are alternatives that have different feature sets