In theory that works. In practice it rarely does. Docker et al gained popularity because they made it way more practical for projects to be managed as the world

In theory that works. In practice it rarely does. Docker et al gained popularity because they made it way more practical for projects to be managed as the world works rather than as it should be, for good or ill. Before Docker it was moving old applications to VMs and before that it was running them in chroot horror shows.