Ignore not exist errors for joining default subsystems
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #5211 from crosbymichael/update-cgroup-defaults

Ignore not exist errors for joining default subsystems
Adding myself to the MAINTAINERS file.

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
move the documentation to markdown

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: )
Merge pull request #5206 from SvenDowideit/stage-markdown

move the documentation to markdown
move the documentation to markdown

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
now, with shiney markdown

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Merge pull request #5219 from dotcloud/master-doc-markdown

now, with shiney markdown
Changed heading colors and some alignments (no longer center and justification in left column)

Docker-DCO-1.1-Signed-off-by: Thatcher Peskens <thatcher@docker.com> (github: dhrp)
Merge pull request #5224 from dhrp/tp-titles-colors

Changed heading colors and some alignments (no longer center and justification in left column)
Merge pull request #5204 from ostezer/new-maintainer

Adding myself to the MAINTAINERS
rst->md conversion fix

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Merge pull request #5227 from SvenDowideit/fix-conversion-urls-securityblog

rst->md conversion fix
Amend breadcrumbs to link to the section indexes, i.e., home/section/

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
Fix headers staying under the menu when clicked-to-scroll.

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
Add integration test for hairpin nat

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume@charmes.net> (github: creack)
Merge pull request #5231 from ostezer/fix-breadcrumbs

Amend breadcrumbs to link to the section indexes, i.e., home/:section/
Merge pull request #5233 from ostezer/docs-fix-scroll-header-margin

Fix headers staying under the menu when clicked-to-scroll.
this topic nolonger crashes the build

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Merge pull request #5245 from SvenDowideit/more-working-with

this topic nolonger crashes the build