I use a self-hosted verdaccio (docker) extensively for my own projects for a long time without as much as a hiccup. It was also a very useful tool for learning

I use a self-hosted verdaccio (docker) extensively for my own projects for a long time without as much as a hiccup. It was also a very useful tool for learning and practicing publishing before the actual push to npmjs.org If you use Python, I recommend DevPi which is something similar.