4 ms·

+ the docker engine is just a polished version of what we had for ages

• user5994461 9y ago
  Not totally accurate. BSD and solaris have had good containerisation engines for a while. Linux, not so much.
  • vertex-four 9y ago
    Ehh... the actual "make a container out of this chunk of the filesystem" bit can be done in a couple hundred lines of Ruby/Python/Perl - Docker is, of course, just telling the kernel to create new uid/filesystem/network/etc namespaces and what to put in them. Most of Docker is the image management system and build tool.
    • icebraining 9y ago
      I think the point is that those namespaces are rather recent themselves, whereas e.g. FreeBSD has had jails since 2000.