Merge pull request yeasy#306 from khs1994/master

Release v0.9.0

Merge pull request yeasy#290 from khs1994/master

Release v0.9-rc2: remove unused files

Release v0.9-rc1

release 0.8.0

Update with latest docker

add more related projects, including docker compose, machine, swarm, …

…k8s and mesos

Start to add more emerging related projects

Fix expression; Add zh-HanT branch

Rewrite the content, fix and add new chapters