Cleanup: Make channels unbuffered

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
Merge pull request #7582 from LK4D4/fix_races

Fix some race conditions
Cleanup: move image depth checks in image/

Signed-off-by: Solomon Hykes <solomon@docker.com>
Merge pull request #7546 from hollietealok/master

Added fredlf's suggested changes.
Merge pull request #7562 from jperrin/master

Updated CentOS documentation to reflect CentOS 7 install.
Merge pull request #7581 from samuel-phan/patch-1

Update docker-attach.1.md
Remove crashTest.go since the use case is covered by docker-stress

Signed-off-by: Andrew Page <admwiggin@gmail.com>
Merge pull request #7593 from tianon/remove-crashtest

Remove crashTest.go since the use case is covered by docker-stress
Merge pull request #7589 from shykes/cleanup-img-depth

Cleanup: move image depth checks in image/
remove empty builder folder

Signed-off-by: Victor Vieux <vieux@docker.com>
Merge pull request #7594 from vieux/remove_empty_folder

remove empty builder folder
Update libcontainer to 29363e2d2d7b8f62a5f353be333

Signed-off-by: Michael Crosby <michael@docker.com>
Enable `docker search` on private docker registry.
The cli interface works similar to other registry related commands:

  docker search foo

... searches for foo on the official hub

  docker search localhost:5000/foo

... does the same for the private reg at localhost:5000

Signed-off-by: Daniel Menet <membership@sontags.ch>
Expand hostname before passing it to NewRegistry()

Signed-off-by: Daniel Menet <membership@sontags.ch>
resolved merge conflict

Signed-off-by: Daniel Menet <membership@sontags.ch>
pkg/tarsum: avoid buf2 allocation in Read

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
update the cli / man page docs based on what is in master right now

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Remove internet dependency from TestBuildCacheADD

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
Merge pull request #7597 from crosbymichael/update-libcontainer-aug4

Update libcontainer to 29363e2d2d7b8f62a5f353be333
Fixes "note" blockquote too long [doc, minor]

A "note" block includes too much text, so if you skip over it the next paragraph makes zero sense.