Improve error for docker exec & LXC

Signed-off-by: Victor Vieux <vieux@docker.com>
Rewrite TestBuildForceRm to not use fixtures

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Rewrite TestBuildHistory to not use fixtures

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Fix code example formatting in best-practices article

Signed-off-by: Lajos Papp <lajos.papp@sequenceiq.com>
Rewrite TestBuildRm to not use fixtures

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Rewrite TestBuildWithInaccessibleFilesInContext to not use fixtures

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Rewrite TestContextTar tests to not use fixtures

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Fix quoting of TESTFLAGS in devenvironment.md

Copy and pasting the example should now work, rather than TESTFLAGS being silently ignored.
IPAllocator: Ensure the allocated IPs are within network range.

Since it is possible to request a specific IP, IPAllocator has to verify
that the request is within boundaries.

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
Merge pull request #8200 from aluzzardi/f-ipallocator-check-range

IPAllocator: Ensure the allocated IPs are within network range.
Merge pull request #8207 from LK4D4/rewrite_more_fixtures_test

Rewrite more fixtures test to not use fixtures.
Replace get.docker.io -> get.docker.com and test.docker.io -> test.docker.com

Signed-off-by: Tibor Vass <teabee89@gmail.com>
Merge pull request #8195 from tiborvass/migrate-get.docker.io

Replace get.docker.io -> get.docker.com and test.docker.io -> test.docker.com
Merge pull request #8212 from hugoduncan/patch-1

Fix quoting of TESTFLAGS in devenvironment.md
Merge pull request #8205 from sequenceiq/master

Fix code example formatting in best-practices article
Updated output from the docker cli help

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Provide full hostname with domainname to underlying container layer
Addresses #7851

Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Add checks for app/json - issue #2515

Signed-off-by: Doug Davis <dug@us.ibm.com>
builder: Fix handling of VOLUME command where multiple volumes are
specified in a space delimited list.

Docker-DCO-1.1-Signed-off-by: Erik Hollensbe <github@hollensbe.org> (github: erikh)
Merge pull request #7994 from erikh/parser_fix_volume_parsing

builder: Fix handling of VOLUME command where multiple volumes are specified in a space delimited list.