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Is there a way to home host a cloud easily?
(alien.top)
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The answer is docker and docker-compose. The problem you're describing is the reason it exists. Each app is isolated and runs as though it has its own dedicated system, but you can map directories and ports in to make data persistent, and ensure it all just works. This includes mapping in your whole HDD, or even /dev if you so desire (don't do this). It honestly makes it trivial to get most things up and running.