Really this is more interesting as a great tutorial on the way Linux container tools work (and especially their fundamental simplicity -- the docs make them seem scary when they really aren't) more than it is as a docker replacement (docker is obviously much larger than this one script, but not really "large" as a software stack).
But reading this makes clear that, yes, containers are just filesystem trees, network namespaces are just like internal networks maintained by straightforward commands underneath an "ip netns" command, etc...
But reading this makes clear that, yes, containers are just filesystem trees, network namespaces are just like internal networks maintained by straightforward commands underneath an "ip netns" command, etc...
Great stuff.