Fix double single dash arg issues in docs

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
Merge pull request #4796 from cpuguy83/fix_single_dash_args_in_dcs

Fix double single dash arg issues in docs
Added Eixo::Docker to the list of libraries

Docker-DCO-1.1-Signed-off-by: Javier Gómez <alambike@gmail.com> (github: alambike)
Merge pull request #4803 from alambike/patch-1

Added Eixo::Docker to the list of libraries