Add some docs about which env vars are defined in new containers

@SvenDowideit FYI

Closes #3087

Signed-off-by: Doug Davis <dug@us.ibm.com>
docs: fixing docker.io api

Signed-off-by: Lajos Papp <lajos.papp@sequenceiq.com>
Fix href in docs w.r.t. cgroups freezer pointer

Apparently, the [...] and (http...) need to be right after each other instead
of on different lines.

Signed-off-by: Doug Davis <dug@us.ibm.com>
Fix typo: reguardless should be regardless

Signed-off-by: Doug Davis <dug@us.ibm.com>
start sending robots.txt (and humans.txt) again, and set to dissallow if its not the real docs site

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Hide the empty sidebad TOC on the search page

This uses @dnephin's changes to the base.html (thank you!)

and then adds the hide_toc: page meta

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Turn off editing for auto-generated index pages, and scroll the user to the right section

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
README.md is a sub-section in how to build automated builds

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Mention the mkdocs.yml file for adding new documents

and move the complicated discussion about branches lower down,
hopefully most won't need to know

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Add more info on attach inspired by discussion in #2855

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Add DOCKER_TLS_VERIFY environment variable, equivalent to --tlsverify flag

This makes it possible to make the Docker client "secure by default"
without wrapping the binary in a shell alias so that `--tlsverify` is
always passed.

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>
Merge pull request #8507 from duglin/Issue3087

Add some docs about which env vars are defined in new containers
Merge pull request #8524 from duglin/Regardless

Fix typo: reguardless should be regardless
Merge pull request #8523 from duglin/FixLinkCmdLine

Fix href in docs w.r.t. cgroups freezer pointer
Merge pull request #8435 from SvenDowideit/explain-docker-attach-more

Add more info on attach inspired by discussion in #2855
Merge pull request #8503 from aanand/tlsverify-environment-variable

Add DOCKER_TLS_VERIFY environment variable, equivalent to --tlsverify flag
Merge pull request #8517 from sequenceiq/master

docs: fixing docker.io api
Merge pull request #8527 from SvenDowideit/dissalow-robots-except-for-docs.docker.com

start sending robots.txt (and humans.txt) again, and set to dissallow if...
Merge pull request #8528 from SvenDowideit/hide-side-toc-for-search

Hide the empty sidebar TOC on the search page
Update libcontainer to 4f409628d80b9842004a3f17c92

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>