Preserve extended attributes and acls on archlinux build

Failure to do this means that file capabilites are not preserved in the image.
Ping fails to work as a non-root user if cap_net_raw is capability is not set

Signed-off-by: Dan Griffin <dgriffin@peer1.com>
Exclude `.wh..wh.*` AUFS metadata on layer export

In an effort to make layer content 'stable' between import
and export from two different graph drivers, we must resolve
an issue where AUFS produces metadata files in its layers
which other drivers explicitly ignore when importing.

The issue presents itself like this:

    - Generate a layer using AUFS
    - On commit of that container, the new stored layer contains
      AUFS metadata files/dirs. The stored layer content has some
      tarsum value: '1234567'
    - `docker save` that image to a USB drive and `docker load`
      into another docker engine instance which uses another
      graph driver, say 'btrfs'
    - On load, this graph driver explicitly ignores any AUFS metadata
      that it encounters. The stored layer content now has some
      different tarsum value: 'abcdefg'.

The only (apparent) useful aufs metadata to keep are the psuedo link
files located at `/.wh..wh.plink/`. Thes files hold information at the
RW layer about hard linked files between this layer and another layer.
The other graph drivers make sure to copy up these psuedo linked files
but I've tested out a few different situations and it seems that this
is unnecessary (In my test, AUFS already copies up the other hard linked
files to the RW layer).

This changeset adds explicit exclusion of the AUFS metadata files and
directories (NOTE: not the whiteout files!) on commit of a container
using the AUFS storage driver.

Also included is a change to the archive package. It now explicitly
ignores the root directory from being included in the resulting tar archive
for 2 reasons: 1) it's unnecessary. 2) It's another difference between
what other graph drivers produce when exporting a layer to a tar archive.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Add test for #8307.

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
fix for iptables cleanup 8307

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
./pkg/archive: clean up Stat_t assertion

inspired by @tonistiigi comment
(https://github.com/docker/docker/pull/8046/files#r19579960)

Signed-off-by: Vincent Batts <vbatts@redhat.com>
Wait for hijack on docker start command

With current implementation there was a possibility
that /start responds quicker than /attach, meaning that
some output would be clipped.

Fixed so the implementation matches with `docker run`.

This also fixes the flaky test results for TestCreateEchoStdout.

Signed-off-by: Tõnis Tiigi <tonistiigi@gmail.com> (github: tonistiigi)
Remove out-of-context code block

Signed-off-by: Huu Nguyen <whoshuu@gmail.com>
proxy: Fix a potential panic handling error states.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
Skip V2 registry and immediately fallback to V1 when mirrors are provided

Since V2 registry does not yet implement mirrors, when mirrors are given automatically fallback to V1 without checking V2 first.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Adding docker-cli run param to set MAC address

Signed-off-by: Malte Janduda <mail@janduda.net>
change util.CopyDirectory to archive.CopyWithTar

Docker-DCO-1.1-Signed-off-by: Daniel, Dao Quang Minh <dqminh89@gmail.com> (github: dqminh)
Clarify USER instruction documentation

Reuse WORKDIR wording to specify that the USER instructions affect the
following RUN, CMD, and ENTRYPOINT instructions.

Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
Grammatical mistake in docs

Change `The team can now use this image by run their own containers.` to `The team can now use this image by running their own containers.`
Remove extra line feed typo

The removed extra line feed broke the paragraph at https://docs.docker.com/userguide/dockerizing/
Do some cleanup on .dockerignore paths

While working on the fix for #8330 I noticed a few things:
1 - the split() call for the .dockerignore process will generate a blank
    "exclude".  While this isn't causing an issue right now, I got worried
	that in the future some code later on might interpret "" as something bad,
	like "everything" or ".".  So I added a check for an empty "exclude"
	and skipped it
2 - if someone puts "foo" in their .dockerignore then we'll skip "foo".
    However, if they put "./foo" then we won't due to the painfully
	simplistic logic of go's filepath.Match algorithm.  To help things
	a little (and to treat ./Dockerfile just like Dockerfile) I added
	code to filepath.Clean() each entry in .dockerignore.  It should
	result in the same semantic path but ensure that no matter how the
	user expresses the path, we'll match it.

Signed-off-by: Doug Davis <dug@us.ibm.com>
enhancing set-macaddress docu

Signed-off-by: Malte Janduda <mail@janduda.net>
Fix typo in api docs: stdou -> stdout
Fix help text being incorrect with multiple args

E.g. "docker foobar run" would have printed "Command not found:
foobar" and printed the help text for "run". It should instead
print the root help message for docker.

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Update "official repos" doc to mention 100 char short desc limit

The Hub no longer accepts short descriptions over 100 characters.

Signed-off-by: Andrew Page <admwiggin@gmail.com>
Merge pull request #8928 from tianon/not-200-chars-anymore

Update "official repos" doc to mention 100 char short desc limit