Initial commit
Init the structure
Add main structure
Add the why use docker chapter
Add the architecture chapter
Add the installation chapter
Add the image chapter
Add the network chapter
Add the advanced network chapter
Add the data management chapter
Add the container security chapter
Add the practice chapter
Update readme and summary
Write paragraphs to explain why we need docker; minor grammar fix.
Rewrite part of the architecture introduction
express refine
Add new chapters: the docker command
Add docker command page
rename the first chapter
fix wrong link name