The default name of the bridge created is called 'docker0'.
docs: shrink images

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
docs: change kernel version requirement

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Merge pull request #8037 from unclejack/shrink_docs_images

docs: shrink images
Merge pull request #8036 from unclejack/kernel_version_requirement

docs: change kernel version requirement
Help new users if their SELinux is not-upgraded yet.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Merge pull request #8030 from SvenDowideit/add-help-if-selinux-is-out-of-date

Help new users if their SELinux is not-upgraded yet.
Merge pull request #8034 from michaljemala/patch-1

The default name of the bridge created is called 'docker0'.