linux 

curl -L https://github.com/drone/drone-cli/releases/download/v0.8.5/drone_linux_amd64.tar.gz | tar zx

sudo install -t /usr/local/bin drone

mac

curl -L https://github.com/drone/drone-cli/releases/download/v0.8.5/drone_darwin_amd64.tar.gz | tar zx

sudo cp drone /usr/local/bin

     build      manage builds

     deploy     deploy code

     exec       execute a local build

     info       show information about the current user

     registry   manage registries

     secret     manage secrets

     repo       manage repositories

     user       manage users

     server     manage servers

     autoscale  manage autoscaling

     help, h    Shows a list of commands or help for one command

registry  可以进行容器镜像仓库的管理（包括密钥）

secret    存储一些项目敏感的信息，比如密码，账户信息，数据库信息

repo      git 代码管理

build     项目构建的一些操作，比如查看信息，启动构建

deploy    执行项目的部署

http://docs.drone.io/cli-installation/