Tekton pipeline DEMO + 探索一些tkn命令

https://github.com/tektoncd/pipeline/blob/master/docs/tutorial.md

1. 安装Tekton CLI（与Tekton交互的CLI）
   curl -LO https://github.com/tektoncd/cli/releases/download/v0.7.1/tkn_0.7.1_Linux_x86_64.tar.gz
   tar xvzf tkn_0.7.1_Linux_x86_64.tar.gz -C /usr/local/bin/ tkn
   

2. vim hello-word.yaml

apiVersion: tekton.dev/v1alpha1
kind: Task
metadata:name: echo-hello-world-task
spec:steps:- name: use-ubuntu-to-echo-a-hello-worldimage: ubuntucommand:- echoargs:- "Hi, a hello world from tekton!"
---
apiVersion: tekton.dev/v1alpha1
kind: TaskRun
metadata:name: echo-hello-world-task-run
spec:taskRef:name: echo-hello-world-task

3. kc apply -f hello-world.yaml
   

4. tkn taskrun
   

5. tkn tr list
   
   task默认namespace:default
   

6. tkn tr cancel
   
   

7. tkn tr delete
   

8. 再次运行，describe
   

9. 测试cancel的作用（终止运行/不再继续运行，describe\list\log操作均表示cancelled）
   
   
   

10. tkn task list
    

11. 如何取消cancelled状态，使之继续运行？

12. 修改yaml，再次运行
    
    

13. describe