I've never rebuilt a container, but I also don't have any containers that are deprecated status either. I swap off to alternatives when a project hits deprecation or abandonware status.

My only deprecated container I currently have is filebrowser, I'm still seeking alternatives and have been for awhile now but strangely enough it doesn't seem there are many web UI file management containers.

As such though ever since I learned that the project was abandoned on life support(the maintainer has said they are doing security patches only, and that while they are doing more on the project currently, that could change), the container remains off, only activating it when i need to use it.