Add support for `RUN [""]` in Dockerfiles for greater specificity in what is actually executed

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Add a few small tweaks to mkimage-debootstrap, especially to help with lucid

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
netlink: add default Route to NetworkGetRoutes

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
network: exclude default routes from checkRouteOverlaps

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
netlink: move Route type to common arch file

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
netlink: make darwin happy

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
Fix symlink mounting issues by evaluating symlinks directly on the LHS of a bind-mount -v and by FollowSymlinkInScope on the RHS just before mounting

Tested successfully with variations around mounting /var/run and /var/run/docker.sock inside a "debian" container directly at /var/run/docker.sock where /var/run is a symlink to "/run" on both the host and in the container.

Fixes #3262

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Update bash completion to ignore stderr output of docker binary

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
archive: Remove unused features

This simplifies that code that calls out to tar by removing support
for now unused features.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
archive: Extract code from ExportChanges to addTarFile()

This is the code that takes a normal file and adds it to a TarWriter.
We extract it so that we can share it with Tar().

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Simplify addTarFile

We can use tar.FileInfoHeader to do much of the work.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Implement TarFilter in go, rather than calling out to tar

This uses a plain filepath.Walk + addTarFile to create a tar file,
optionially compressing it with gzip.

Unfortunately go only has gzip compression support, not bzip2 or xz.
However, this is not a regression, as docker currently uses *no*
compression for TarFilter(). The only compression of tarfiles
currently happens in utils/tarsum.go, and that manually does gzip
compression.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
hack: Remove GNU Tar requirement

We no longer call out to tar, so this is not needed.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Rename Process to Command

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
update todo

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Remove Ken from docs maintainers (he's busy on other things)

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Remove myself as sole maintainer of api reference docs.

Please still ping me before changing APIs :)

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
docs: simplify basic usage doc, step 1: check your docker install

docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
docs: move a sysadmin-focused topic out of the basic usage manual and into installation docs (setting up a user group for non-root access)

docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
docs: add standard 'check your docker install' paragraph to the 'hello world' examples.

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)