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This moves the bind mounts like /.dockerinit, /etc/hostname, volumes, etc into the container namespace, by setting them up using lxc. This is useful to avoid littering the global namespace with a lot of mounts that are internal to each container and are not generally needed on the outside. In particular, it seems that having a lot of mounts is problematic wrt scaling to a lot of containers on systems where the root filesystem is mounted --rshared. Note that the "private" option is only supported by the native driver, as lxc doesn't support setting this. This is not a huge problem, but it does mean that some mounts are unnecessarily shared inside the container if you're using the lxc driver. Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
pkg/ is a collection of utility packages used by the Docker project without being specific to its internals.
Utility packages are kept separate from the docker core codebase to keep it as small and concise as possible. If some utilities grow larger and their APIs stabilize, they may be moved to their own repository under the Docker organization, to facilitate re-use by other projects. However that is not the priority.
The directory pkg is named after the same directory in the camlistore project. Since Brad is a core
Go maintainer, we thought it made sense to copy his methods for organizing Go code :) Thanks Brad!
Because utility packages are small and neatly separated from the rest of the codebase, they are a good place to start for aspiring maintainers and contributors. Get in touch if you want to help maintain them!