Updated the COPY directive reference: Source can't be a URL for COPY (+ formatting error fixes)

Signed-off-by: Roman Dudin <katrmr@gmail.com>
execdriver/lxc: add comment to MAINTAINERS

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Remove the redundant stripComment.

Signed-off-by: xuzhaokui <cynicholas@gmail.com>
Additional info for docker binary
Signed-off-by: Prasanna Gautam <prasannagautam@gmail.com>

I found that certain docker installations do not handle binding to the source directory quite right. Just writing it based on help from backjlack and tibor in IRC.
limiting to 80 chars

Signed-off-by: Prasanna Gautam < prasannagautam@gmail.com >
Fix: Failed Start breaks VolumesFrom

Running parseVolumesFromSpec on all VolumesFrom specs before initialize
any mounts endures that we don't leave container.Volumes in an
inconsistent (partially initialized) if one of out mount groups is not
available (e.g. the container we're trying to mount from does not
exist).

Keeping container.Volumes in a consistent state ensures that next time
we Start() the container, it'll run prepareVolumes() again.

The attached test demonstrates that when a container fails to start due
to a missing container specified in VolumesFrom, it "remembers" a Volume
that worked.

Fixes: #8726

Signed-off-by: Thomas Orozco <thomas@orozco.fr>
Add link to Docs README.

Linking to the docs readme to help would-be contributors discover the style guide and docs contribution guidelines.

Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)
fixing punctuation and grammar

Signed-off-by: Prasanna Gautam <prasannagautam@gmail.com>
properly line wrapping

Signed-off-by: Prasanna Gautam <prasannagautam@gmail.com>
Fix 80 char. error

Docker-DCO-1.1-Signed-off-by: Fred Lifton <fred.lifton@docker.com> (github: fredlf)
Merge pull request #9050 from prasincs/patch-1

Additional info for docker binary
Merge pull request #9048 from coaku/b_xzk_rm_redundant_trim

Remove redundant stripComment
Add some details about the lifecycle of commands started with docker exec

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
Merge pull request #9071 from fredlf/add-docs-readme

Add link to Docs README.
Merge pull request #8726 from krallin/failed-start-breaks-volumes-from

Fix: a failed Start() breaks --volumes-from on subsequent Start()'s
pkg/archive: add interface for Untar

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Cleanup some integration-cli output

I noticed a few things that were bugging me in the output
of the integration-cli tests.
- one of the tests used println to stdout so we had garage sent to the screen
- some of the test, in their final log message, didn't include the name of
  the group/file e.g.  daemon - run,iptables   was just   run,iptables

And yes, I noticed this because I'm anal :-)  but also because we should keep
the output of the tests as clean as possible so its easy to spot it when
things go bad.

Signed-off-by: Doug Davis <dug@us.ibm.com>
Merge pull request #9091 from duglin/CleanupIntTests

Cleanup some integration-cli output
Merge pull request #9082 from SvenDowideit/pr_out_add_some_details_about_the_lifecycle_of_commands_started_with_docker_exec

Add some details about the lifecycle of commands started with docker exec
Merge pull request #8840 from decadent/fix-da-copy-directive-reference

Nuh uh... quoth the build log: Source can't be a URL for COPY