Add README section about nesting
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@ -10,7 +10,11 @@ Fakeroot is a utility that runs commands in an environment where they appear to
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### How is this library different?
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Instead of injecting custom libc functions, this library uses the Linux kernel's built-in isolation features to make a sort of container where the user is root. That means even programs that don't use libc (such as Go programs), or programs with a statically-linked libc, will believe they're running as root. However, this approach will only work on Linux kernels new enough (3.8+) and on distros that don't disable this functionality. Most modern Linux systems support it though, so it should work in most cases.
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Instead of injecting custom libc functions, this library uses the Linux kernel's built-in isolation features to make a sort of container where the user is root. That means even programs that don't use libc (such as Go programs), or programs with a statically-linked libc, will believe they're running as root.
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You can also nest this type of fakeroot up to 32 times, unlike the original libc-based one, which doesn't support nesting at all.
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However, this approach will only work on Linux kernels new enough (3.8+) and on distros that don't disable this functionality. Most modern Linux systems support it though, so it should work in most cases.
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### Why?
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